Shelfcanvas
Halloween · Oct 31

Halloween AI Prompts for Selfies and Pets

Copy 9 free Halloween AI prompts, 6 for selfies and 3 for pets, each shown with the photo it made, and paste one into Gemini or ChatGPT with your photo.

Hollow Oak Witch prompt result: woman in a green wool cloak by a haunted hollow oak
Raven Braids prompt result: woman with purple beaded braids at a cobwebbed cemetery gate
Cosmic Princess prompt result: woman in a crescent-moon crown and navy constellation gown in an observatory

In short

  • Every prompt has five blocks: PRESERVE, CHANGE, SCENE AND LIGHT, PHOTOGRAPHY and EXCLUDE.
  • Edit only CHANGE and SCENE AND LIGHT; each card's Make it yours line names the one word to swap.
  • Attach your photo before you paste: without one, the editor has no face or pet to keep.
  • Try on your photo opens the same look in the Shelfcanvas costume generator, with Me or Pet already selected.

Halloween AI prompts for adult selfies

These six prompts share the same PRESERVE and EXCLUDE rules for people; each PHOTOGRAPHY block names its own photo style and framing. What changes most is the costume in CHANGE and the setting in SCENE AND LIGHT.

The example images on this page were made with Shelfcanvas. Where a card shows a small Original picture, that is the photo the example started from.

Hollow Oak Witch prompt result: woman in a green wool cloak by a haunted hollow oak

Hollow Oak Witch

A woodland witch in a moss-green wool cloak by a haunted hollow oak, shot as a hand-tinted 1920s spirit photograph.

  • Me
  • 1 photo
  • 4:5 portrait
  • Gemini
  • ChatGPT

Make it yours: Swap "moss-green" for "rust-orange", or the herbs for "dried flowers". Keep "No pointed hat and no franchise emblem" and "away from the face".

PRESERVE: Use the uploaded photo as the main reference. Keep this exact person: same face shape, facial features, natural skin tone, apparent age, expression, the same head angle and the same number of people (one). The face stays fully visible. CHANGE: An original woodland-witch Halloween costume portrait. Eerie, mysterious, atmospheric Halloween mood. A textured moss-green wool cloak with its hood resting on the shoulders, away from the face, a dark linen tunic, a plain leather belt and small bundles of dried herbs tied with twine at the waist. Keep the original hairstyle. No pointed hat and no franchise emblem. SCENE AND LIGHT: A huge hollow oak at midnight in a misty forest: carved jack-o'-lanterns glowing between its roots, thick cobwebs across the dark hollow, an iron cauldron on the moss and fallen orange oak leaves on the ground. A faint translucent ghost stands small and far behind, between two trees. Low fog drifts along the ground. Cold blue moonlight as a rim light from behind, warm orange lantern glow on the face from below. Deep shadows between the trees. Palette: moss green, pumpkin orange, sepia brown and deep night blue. PHOTOGRAPHY: A hand-tinted 1920s spirit photograph: sepia base with soft hand-coloured green and orange, fine grain, soft vignette, a faint double-exposure ghosting. Head-and-shoulders to half-body portrait that keeps the crop of the uploaded photo; the cloak and face carry the detail, the oak fills the background. Hands rest naturally and hold nothing. EXCLUDE: The costume is worn like real clothing on a real person. Do not cover the eyes. Do not replace or redraw the face. No existing copyrighted characters or franchise costumes. No other people in the background at all. Avoid: changed face or identity, changed skin or eye colour, age change, extra or missing limbs or fingers, a second person, any other person in the background, letters or numbers on clothing, text, logos, watermarks, blood, gore.
Raven Braids prompt result: woman with purple beaded braids at a cobwebbed cemetery gate

Raven Braids

Long deep-purple beaded braids and a velvet gothic jacket at a moonlit cemetery gate, shot as a 1990s horror-movie still.

  • Me
  • 1 photo
  • 4:5 portrait
  • Gemini
  • ChatGPT

Make it yours: Replace "deep-purple" with "deep-green" or "silver-white", and keep "kept behind the cheeks so the face is clear".

PRESERVE: Use the uploaded photo as the main reference. Keep this exact person: same face shape, facial features, natural skin tone, apparent age, expression, the same head angle and the same number of people (one). The face stays fully visible. CHANGE: An original gothic Halloween portrait with braided hair. Eerie, mysterious, atmospheric Halloween mood. Restyle the hair into long deep-purple braids threaded with small plain silver beads and crescent charms, kept behind the cheeks so the face is clear. A black and plum velvet gothic jacket with a high collar and ornate silver clasps. SCENE AND LIGHT: A moonlit Victorian cemetery garden on Halloween night: a wrought-iron gate with carved stone ravens on its posts, jack-o'-lanterns along the path, cobwebs strung across the gate and a full moon low in the sky. Small bat silhouettes cross the moon far behind. Low fog drifts between the headstones. Cold silver moonlight as a rim light from behind, warm amber lantern light as the key on the face. Deep shadows across the path. Palette: plum, black, silver and ember orange. PHOTOGRAPHY: A 1990s horror-movie film still: 35mm film grain, slight halation, shallow depth of field. Head-and-shoulders to half-body portrait that keeps the crop of the uploaded photo; braids, collar and clasps are sharp, the gate and moon sit softly behind. Hands rest naturally and hold nothing. EXCLUDE: The costume is worn like real clothing on a real person. Do not cover the eyes. Do not replace or redraw the face. No existing copyrighted characters or franchise costumes. No other people in the background at all. Avoid: changed face or identity, changed skin or eye colour, age change, extra or missing limbs or fingers, a second person, any other person in the background, letters or numbers on clothing, text, logos, watermarks, blood, gore.
Cosmic Princess prompt result: woman in a crescent-moon crown and navy constellation gown in an observatory
Original photo for the Cosmic Princess example: woman with short curly hair in a navy T-shirtOriginal

Cosmic Princess

A navy constellation gown and a silver crescent-moon crown in an old observatory, shot as a Halloween fashion-magazine editorial.

  • Me
  • 1 photo
  • 4:5 portrait
  • Gemini
  • ChatGPT

Make it yours: Change the gown colour from "deep-navy" to "midnight-black" or "plum". Keep "Keep the original hairstyle" so the crown sits on your own hair.

PRESERVE: Use the uploaded photo as the main reference. Keep this exact person: same face shape, facial features, natural skin tone, apparent age, expression, the same head angle and the same number of people (one). The face stays fully visible. CHANGE: An original celestial-princess Halloween costume portrait. Eerie, mysterious, atmospheric Halloween mood. An original deep-navy velvet gown with delicate silver-thread constellation embroidery and a few softly luminous star motifs, plus a small sculptural silver crescent-moon crown. Keep the original hairstyle. SCENE AND LIGHT: An old observatory on Halloween night: a huge full moon through the open dome, carved jack-o'-lanterns lined along the brass railing, cobwebs on the telescope and bat silhouettes crossing the moon. A faint translucent ghost stands small and far behind by the telescope. Thin mist drifts across the floor. Cold silver-blue moonlight from the dome as a rim light, warm pumpkin glow as a soft key on the face. Deep shadows in the dome. Palette: midnight navy, silver and pumpkin orange. PHOTOGRAPHY: A Halloween fashion-magazine editorial photograph, medium format, crisp detail, shallow depth of field. Head-and-shoulders to half-body portrait that keeps the crop of the uploaded photo; the crown and embroidery are sharp, the moon sits behind the head. Hands rest naturally and hold nothing. EXCLUDE: The costume is worn like real clothing on a real person. Do not cover the eyes. Do not replace or redraw the face. No existing copyrighted characters or franchise costumes. No other people in the background at all. Avoid: changed face or identity, changed skin or eye colour, age change, extra or missing limbs or fingers, a second person, any other person in the background, letters or numbers on clothing, text, logos, watermarks, blood, gore.
Halloween Robot prompt result: man with his glasses and beard in metal armour with blue lights
Original photo for the Halloween Robot example: man with glasses and a beard in a grey T-shirtOriginal

Halloween Robot

Brushed-metal armour with blue LED strips that keeps your own face and glasses, in an inventor's workshop, shot as a 1990s VHS camcorder frame.

  • Me
  • 1 photo
  • 4:5 portrait
  • Gemini
  • ChatGPT

Make it yours: Edit "blue LED strips" to red or green, or "brushed-metal" to "copper". Keep "no helmet and no robotic face".

PRESERVE: Use the uploaded photo as the main reference. Keep this exact person: same face shape, facial features, natural skin tone, apparent age, expression, the same head angle and the same number of people (one). The face stays fully visible. CHANGE: An original robot Halloween costume portrait; a costume worn by a person, not a transformation into a robot. Eerie, mysterious, atmospheric Halloween mood. Segmented brushed-metal chest and shoulder plates over a charcoal fabric undersuit, small blue LED strips and believable joints in human proportions. Keep the original head, face, hair, facial hair and any eyeglasses unchanged and uncovered; no helmet and no robotic face. SCENE AND LIGHT: A cluttered inventor's workshop on Halloween night: carved jack-o'-lanterns on the workbench, cobwebs across old machines, paper bats hanging from a pipe and a full moon in the dusty window. A faint translucent ghost stands small and far behind in a doorway. Low haze hangs in the workshop. Cold blue LED glow and moonlight from the window as rim light, warm orange pumpkin glow as fill on the face. Deep shadows between the machines. Palette: gunmetal grey, electric blue and pumpkin orange. PHOTOGRAPHY: A 1990s VHS camcorder frame: soft focus, scan lines, slight colour bleed, no timestamp or on-screen text. Head-and-shoulders to half-body portrait that keeps the crop of the uploaded photo; the chest and shoulder plates are clearly visible. Hands rest naturally and hold nothing. EXCLUDE: The costume is worn like real clothing on a real person. Do not cover the eyes. Do not replace or redraw the face. No existing copyrighted characters or franchise costumes. No other people in the background at all. Avoid: changed face or identity, changed skin or eye colour, age change, extra or missing limbs or fingers, a second person, any other person in the background, letters or numbers on clothing, text, logos, watermarks, blood, gore.
Bone Lace Skeleton prompt result: woman with ivory bone lines on her cheeks and painted teeth
Original photo for the Bone Lace Skeleton example: woman with short curly hair in a navy T-shirtOriginal

Bone Lace Skeleton

Fine ivory bone-lace face paint on the cheekbones, temples and jawline, with a black suit in a candle-lit parlour, shot as an antique silver daguerreotype.

  • Me
  • 1 photo
  • 4:5 portrait
  • Gemini
  • ChatGPT

Make it yours: For bolder paint, change "fine ivory" to "bright white". Keep "not a sugar-skull design" and "never a real skull or a mask".

PRESERVE: Use the uploaded photo as the main reference. Keep this exact person: same face shape, facial features, natural skin tone, apparent age, expression, the same head angle and the same number of people (one). The face stays fully visible. CHANGE: An original skeleton face-paint Halloween portrait; makeup on the same face, never a real skull or a mask. Eerie, mysterious, atmospheric Halloween mood. Light, non-gory partial skeleton face paint only on the cheekbones, temples and jawline: fine ivory bone-lace lines and soft charcoal shading, with subtle painted teeth only outside the real lip outline. The forehead, nose, the skin around both eyes and the lips stay natural and unpainted; not a sugar-skull design, no flowers and no swirls around the eyes. An elegant black tailored suit with a black lace collar. SCENE AND LIGHT: A candle-lit Victorian parlour on Halloween night: an old skull and melted candles on the mantel, carved jack-o'-lanterns, cobwebs across the window and a full moon outside. A faint translucent ghost stands small and far behind by the window. Thin mist drifts across the floor. Cold moonlight from the window as a rim light, warm candlelight as a soft key on the face. Deep shadows in the room. Palette: silver grey, ivory, black and a touch of candle amber. PHOTOGRAPHY: An antique silver daguerreotype portrait: silver-grey tones with a slight warm candle tint, soft vignette, fine plate texture, shallow depth of field. Head-and-shoulders portrait that keeps the crop of the uploaded photo; the face paint is sharp and the parlour sits softly behind. Hands rest naturally and hold nothing. EXCLUDE: The costume is worn like real clothing on a real person. Do not cover the eyes. Do not replace or redraw the face. No existing copyrighted characters or franchise costumes. No other people in the background at all. Avoid: changed face or identity, changed skin or eye colour, age change, extra or missing limbs or fingers, a second person, any other person in the background, letters or numbers on clothing, text, logos, watermarks, blood, gore.
Moonlit Unicorn prompt result: man with glasses in a lilac unicorn hood with a glowing horn
Original photo for the Moonlit Unicorn example: man with glasses and a beard in a grey T-shirtOriginal

Moonlit Unicorn

A lilac plush unicorn hood with a glowing horn that keeps your face and glasses in view, at an abandoned carousel, shot as a 1990s horror-movie still.

  • Me
  • 1 photo
  • 4:5 portrait
  • Gemini
  • ChatGPT

Make it yours: Change "dusty-lilac" to "mint" or "charcoal". Keep "Do not imitate any existing movie, game or cartoon character".

PRESERVE: Use the uploaded photo as the main reference. Keep this exact person: same face shape, facial features, natural skin tone, apparent age, expression, the same head angle and the same number of people (one). The face stays fully visible. CHANGE: An original moonlit-unicorn mascot costume portrait, with its own simple design. Eerie, mysterious, atmospheric Halloween mood. Soft dusty-lilac shaggy plush, small stitched silver ears and a single translucent glowing spiral horn above the forehead. An open-face hood rests behind the hairline, so the original head, hairstyle, facial hair and eyeglasses stay visible. Do not imitate any existing movie, game or cartoon character. SCENE AND LIGHT: An abandoned carousel at night on Halloween: carved jack-o'-lanterns on the carousel steps, cobwebs between the poles, bat silhouettes crossing a full moon and broken carnival bulbs glowing amber. A faint translucent ghost stands small and far behind among the carousel horses. Low lilac mist drifts across the ground. Cold ghostly lilac glow from the horn and moonlight as rim light, warm amber carnival bulbs as fill on the face. Deep shadows under the carousel roof. Palette: dusty lilac, silver, amber and night blue. PHOTOGRAPHY: A 1990s horror-movie film still: 35mm film grain, slight halation, shallow depth of field. Head-and-shoulders to half-body portrait that keeps the crop of the uploaded photo, with room above the head for the horn. Hands rest naturally and hold nothing. EXCLUDE: The costume is worn like real clothing on a real person. Do not cover the eyes. Do not replace or redraw the face. No existing copyrighted characters or franchise costumes. No other people in the background at all. Avoid: changed face or identity, changed skin or eye colour, age change, extra or missing limbs or fingers, a second person, any other person in the background, letters or numbers on clothing, text, logos, watermarks, blood, gore.
Try a look on your photo

Pet Halloween prompts for cats and dogs

The three pet Halloween prompts below are Jack-o'-Paws, Glow Dino and Baked Potato, each shown with the example it made. The three pet prompts share a different PRESERVE paragraph, written for animals: same species and breed, coat colour, markings and pattern, eye colour and head angle, with both eyes visible. EXCLUDE adds that the pet stays the same species and that its eyes and ears are never covered.

Halloween AI prompt result: orange tabby cat in a pumpkin outfit on a Halloween porch
Original photo for the Jack-o'-Paws example: orange tabby cat sitting by a windowOriginal

Jack-o'-Paws

A soft pumpkin costume for your cat or dog on a Halloween porch, shot as a candid party snapshot with on-camera flash.

  • Pet
  • 1 photo
  • 4:5 portrait
  • Gemini
  • ChatGPT

Make it yours: Change "orange" to "white" for a ghost pumpkin, or "small green felt leaf" to "curly green vine". Keep "no hood and no mask".

PRESERVE: Use the uploaded photo as the main reference. Keep this exact pet: same species and breed, coat colour, markings and pattern, eye colour and eye shape, the same head angle and the same number of animals (one). Both eyes stay fully visible. CHANGE: An original pumpkin Halloween costume portrait of the pet. Eerie, mysterious, atmospheric Halloween mood. A soft pumpkin-shaped orange fabric costume around the torso, with ribbed fabric panels and one small green felt leaf at the collar, with natural openings for the legs and tail. The whole head, muzzle, eyes and ears stay uncovered; no hood and no mask. This is clothing on the same animal. SCENE AND LIGHT: A front porch on Halloween night: carved jack-o'-lanterns on the steps, a small cauldron of wrapped candy, paper bats on strings, fake cobwebs on the railing and fallen leaves on the boards. A faint translucent ghost stands small and far behind in the yard. Low fog drifts across the yard. Cold blue night sky behind, warm orange porch light and lantern glow on the pet. Deep shadows at the edges of the porch. Palette: pumpkin orange, deep purple and warm gold. PHOTOGRAPHY: A candid Halloween party snapshot: on-camera flash pop, 35mm lens, slightly blurred background. The pet centred and filling about half the frame, eyes sharp, the porch behind. EXCLUDE: The costume is clothing worn by the same animal, which stays the same species. Do not cover the pet's eyes or ears. Do not redraw the pet's face or markings. No existing copyrighted characters. No other people or animals anywhere in the frame. Avoid: changed breed, coat colour, markings or eye colour, extra or missing legs or paws, a second animal, any other person in the background, letters or numbers on clothing, text, logos, watermarks, blood, gore.
Pet Halloween prompt result: golden retriever in a green dinosaur suit with glowing spikes
Original photo for the Glow Dino example: golden retriever smiling at the cameraOriginal

Glow Dino

A charcoal-green fleece dinosaur suit with glowing spikes that keeps your pet's face furry, in a moonlit backyard, shot as a 1990s VHS home-video frame.

  • Pet
  • 1 photo
  • 4:5 portrait
  • Gemini
  • ChatGPT

Make it yours: Change the suit from "charcoal-green" to "purple", or the spikes from "luminous green" to "orange". Keep "no hood, mask, reptile skin, dinosaur head or altered paws".

PRESERVE: Use the uploaded photo as the main reference. Keep this exact pet: same species and breed, coat colour, markings and pattern, eye colour and eye shape, the same head angle and the same number of animals (one). Both eyes stay fully visible. CHANGE: An original glowing-dinosaur Halloween costume portrait of the pet. Eerie, mysterious, atmospheric Halloween mood. A soft charcoal-green fleece dinosaur suit with a row of small luminous green fabric spikes down the back and a fabric tail attached to the suit. Open neck: no hood, mask, reptile skin, dinosaur head or altered paws. The face stays fully furry; the eyes and ears stay fully visible. SCENE AND LIGHT: A backyard on Halloween night: carved jack-o'-lanterns on the lawn, cobwebs on the wooden fence, bat silhouettes crossing a full moon and fallen leaves on the grass. A faint translucent ghost stands small and far behind by the fence. Low fog drifts across the lawn. Cold moonlight and green glow from the spikes, warm orange jack-o'-lantern light on the pet's face. Deep shadows along the fence. Palette: glow green, charcoal, pumpkin orange and night blue. PHOTOGRAPHY: A 1990s VHS home-video frame: soft focus, scan lines, slight colour bleed, no timestamp or on-screen text. The pet filling about half the frame, eyes sharp, the back, spikes and tail visible; keep the body angle of the uploaded photo where possible. EXCLUDE: The costume is clothing worn by the same animal, which stays the same species. Do not cover the pet's eyes or ears. Do not redraw the pet's face or markings. No existing copyrighted characters. No other people or animals anywhere in the frame. Avoid: changed breed, coat colour, markings or eye colour, extra or missing legs or paws, a second animal, any other person in the background, letters or numbers on clothing, text, logos, watermarks, blood, gore.
Photo prompt result: orange tabby cat in a felt potato shell in a witch's kitchen
Original photo for the Baked Potato example: orange tabby cat sitting by a windowOriginal

Baked Potato

A felt baked-potato costume with a foil wrap, butter pat and chives, in a witch's kitchen, shot as a Halloween food-magazine editorial.

  • Pet
  • 1 photo
  • 4:5 portrait
  • Gemini
  • ChatGPT

Make it yours: Swap "a few felt chive pieces" for "felt sour cream and bacon bits". Keep "All toppings are fabric costume props, never real food".

PRESERVE: Use the uploaded photo as the main reference. Keep this exact pet: same species and breed, coat colour, markings and pattern, eye colour and eye shape, the same head angle and the same number of animals (one). Both eyes stay fully visible. CHANGE: An original baked-potato Halloween costume portrait of the pet; a costume, not food. Eerie, mysterious, atmospheric Halloween mood. A soft brown padded potato-shell costume around the torso, a loose crinkled silver-foil fabric wrap, a tiny fabric butter pat and a few felt chive pieces sewn on top. All toppings are fabric costume props, never real food. The head, eyes, muzzle, ears and paws stay uncovered. SCENE AND LIGHT: A witch's kitchen on Halloween night: the pet sits on a broad wooden table away from any heat, with carved jack-o'-lanterns, melted candles, a black iron cauldron and cobwebs over copper pans behind. A faint translucent ghost stands small and far behind by the window. Thin steam-like mist drifts from the cauldron. Cold moonlight through the window as a rim light, warm candle and lantern glow on the pet. Deep shadows in the corners. Palette: potato brown, foil silver, butter yellow and pumpkin orange. PHOTOGRAPHY: A Halloween food-magazine editorial photograph, crisp detail, shallow depth of field. The pet centred and filling about half the frame, eyes sharp, the kitchen behind. EXCLUDE: The costume is clothing worn by the same animal, which stays the same species. Do not cover the pet's eyes or ears. Do not redraw the pet's face or markings. No existing copyrighted characters. No other people or animals anywhere in the frame. Avoid: changed breed, coat colour, markings or eye colour, extra or missing legs or paws, a second animal, any other person in the background, letters or numbers on clothing, text, logos, watermarks, blood, gore.

How to use these prompts for Gemini AI Halloween photos and ChatGPT

To use these prompts for Gemini AI Halloween photos or in ChatGPT, attach your photo first and paste one complete prompt, in four steps.

  1. Pick a look. Choose a look above, such as Moonlit Unicorn, and press Copy prompt to copy all five blocks at once.

  2. Attach your photo first. Open an image-editing chat in Gemini or ChatGPT and attach a clear selfie or pet photo before you paste anything.

  3. Paste the full prompt. Paste the copied prompt as one message, keeping PRESERVE and EXCLUDE in place.

  4. Change one line at a time. To make the look yours, edit one colour in CHANGE, such as "moss-green" to "rust-orange", and generate again.

These prompts are written for any image editor that accepts a reference photo, including Gemini and ChatGPT. Without a photo, the editor has no face or pet to keep, and the PRESERVE block has nothing to work on. Features and limits depend on the service and your account, and photos you upload there follow that service's data policy.

Gemini and ChatGPT set the picture shape and take your photo in different ways. This is what their own help pages say:

StepGeminiChatGPT
Set a 4:5 portraitAsk for it in the prompt, such as "4:5 portrait"; Google's prompting tips say to define the canvas and aspect ratio.Use the aspect ratio picker, or include the aspect ratio in your prompt.
Attach your photoOn the web, choose Add files and upload the photo.Tap + and choose Add photos & files, drag the image into the text area, or paste it.

Sources: Google's Nano Banana Pro prompting tips, Gemini Apps upload help and Gemini Apps image help; OpenAI's Images in ChatGPT and uploading images.

The same prompt can give different results in different editors, and the example images were made with Shelfcanvas. If an editor refuses a prompt, try removing any words you added, rather than deleting the EXCLUDE block. Not affiliated with Google or OpenAI.

Selfie prompt edits that keep your face

The selfie prompt edits that keep your face are colour words. The safest edits are colour words in CHANGE: braid colour, gown colour, cloak colour, LED colour.

If the resultChange this
No longer looks like youGo back to the original PRESERVE paragraph and change one CHANGE sentence at a time. Changes to body shape, age or skin need edits to PRESERVE, and those are the edits that make results stop looking like you.
Loses your glassesCheck that the word "eyeglasses" is still in the prompt; Halloween Robot and Moonlit Unicorn name them on purpose.
Adds a hat, helmet or maskPut back the protective sentence in CHANGE, such as "No pointed hat and no franchise emblem" or "no helmet and no robotic face".
Is too dark on your faceKeep the warm light on the face in SCENE AND LIGHT, such as "warm orange lantern glow on the face from below", and change only the palette line.
Shows a second person, text or a logoKeep "the same number of people (one)" in PRESERVE and the whole EXCLUDE block.
Is refused by the editorRemove any words you added rather than deleting the EXCLUDE block.

Couples Halloween prompts: one scene, two portraits

Couples Halloween prompts work as two portraits that share one scene, because these prompts are for one person per image. For matching portraits, use the same SCENE AND LIGHT paragraph in both prompts and change only CHANGE. Two Hollow Oak Witch prompts with "moss-green" and "rust-orange" cloaks, or a Cosmic Princess and a Halloween Robot both moved to the same observatory, look like a set. Each adult edits from their own photo. Keep "the same number of people (one)" in PRESERVE, so the editor does not add the second person into the first portrait. To show the pair together, stack both portraits in the photo strip of the Halloween photo frame maker.

Pet prompt edits that protect the markings

A pet prompt protects the markings through its PRESERVE block. The pet PRESERVE paragraph names "markings and pattern" and "eye colour" because those are what editors change most.

If the resultChange this
Loses a white chest patch or a split faceAdd one more short sentence to PRESERVE naming it, such as "Keep the white blaze on the nose". This is the one edit to PRESERVE that helps rather than hurts.
Hides an eyeKeep "Both eyes stay fully visible" in every pet prompt.
Adds a second petKeep the EXCLUDE line "No other people or animals anywhere in the frame" so a second pet does not appear.
Gives the pet scales or a costume headKeep the lines that say what the costume must not do, such as "no hood, mask, reptile skin, dinosaur head or altered paws" in Glow Dino.

A repeatable Halloween prompt set for content creators

A repeatable Halloween prompt set keeps one EXCLUDE block and one photo style. To turn a finished portrait into a round avatar, use the Halloween PFP maker.

If the seriesChange this
Needs text, logos or strangers removedKeep EXCLUDE identical in every prompt, so the images stay free of text, logos and strangers you would otherwise have to remove.
Does not look like one shootPick one photo style from PHOTOGRAPHY, such as the VHS camcorder frame or the 1990s horror-movie still, and use it across the set.
Does not match your coloursChange the palette line in SCENE AND LIGHT to match your colours, and keep a note of each edit next to the image it made.

Want the whole set without editing text? Choose Try on your photo on any look above and the AI Halloween costume generator makes the image from your photo.

Write your own Halloween photo prompt

Start from any look above and keep its first part, which tells the editor to keep your face or your pet's markings, word for word. Then describe the costume piece by piece: the fabric, the colour and two or three small details. Add a Halloween setting with a few props and say what kind of photo it should look like, such as a 1990s horror-movie still. End with what must not appear, such as text, logos or a second person.

Try a look on your photo

Frequently asked questions

Shelfcanvas, an AI image editor with a Halloween costume generator, publishes nine complete Halloween AI prompts on this page: six for adult selfies and three for pets. Each prompt copies with one Copy prompt button and opens in the Shelfcanvas costume generator through Try on your photo.

You can read and copy all nine Halloween AI prompts without an account or credits. To generate on Shelfcanvas, sign in; uploading a photo confirms that you have permission to use it and that everyone in it is 18 or older. Another image service may need its own account.

Yes. They are written for editors like Gemini and ChatGPT that accept a reference photo: attach your photo in a chat that can edit images, then paste one complete prompt. Without a reference photo, an editor makes a different person or animal, and results can differ from the example images. Not affiliated with Google or OpenAI.

Keep PRESERVE, PHOTOGRAPHY and EXCLUDE as they are, along with the protective sentences inside CHANGE, such as "no helmet and no robotic face" or "never a real skull or a mask". Edit colours, materials and props in CHANGE, and the setting in SCENE AND LIGHT. If your face or a pet's markings still change, use a sharper photo and, for pets, add one PRESERVE sentence naming the marking you want kept.

Copying a prompt sends no photo to Shelfcanvas, and a photo you upload to the generator must show only adults or your pet, is never used to train AI and is kept only as long as the privacy policy says.

See the privacy policy.

Images generated on Shelfcanvas can be used commercially when you have the rights to the photo and permission to use the person's likeness for that purpose. This does not grant exclusive copyright. If you generate elsewhere, check that service's terms as well.

Halloween is in 4 days

Try a look on your own photo

Skip the prompt: upload a photo and pick a Halloween costume look.

  • Costume looks
  • Couple costumes
  • Pet costumes
Everything for Halloween
Two friends in witch costumes at a Halloween party, no frame yet
Your photo
The same friends in a white Halloween Polaroid frame with bats and the caption Witchy Friday
Result