A birthday poster with a clean cutout portrait, a soft blue background, glowing lights and a bold name looks like something from a professional design studio. A few years ago it would have taken an hour in a design app. Today you can ask Google Gemini to make it from one photo and a single prompt. The prompt below is ready to copy, and all you have to change is the name.

In this post I will share the prompt first, then explain how to use it step by step, how to customize it and how to fix the common problems. I use these tools on the Editaurastudio channel along with Alight Motion, so I will also show how you can turn the finished poster into a short video.

The Prompt (Copy and Paste)



Press and hold inside the box below, select all and copy. Then paste it into Gemini after uploading your photo. Replace NANI with the name you want, and change the word "girl" if the photo is of someone else.

Create a modern, aesthetic birthday poster with a soft blue gradient background. Place a large cutout portrait of the girl in the center with a thick white outline and subtle glow. Add two small Polaroid-style photo frames containing the same portrait on the left and right sides, slightly tilted for a playful look. Decorate the background with soft white butterflies, glowing bokeh lights, and a dreamy atmosphere. At the top, add large bold white text that says "Birthday" in a stylish rounded font. At the bottom, include small uppercase text "HAPPY BIRTHDAY" above a large bold blue name reading "NANI" in an elegant decorative font. Add a torn white paper effect across the bottom behind the text. Use smooth lighting, vibrant colors, clean composition, soft shadows, and a premium Instagram birthday poster aesthetic. High quality, ultra-realistic, 8K resolution, crisp details, balanced layout, professional graphic design. Ratio 3:4

What This Prompt Creates

The prompt asks for a poster in a portrait shape, with a ratio of 3:4, which suits Instagram posts and WhatsApp Status. You get a large portrait in the middle with a white outline, two smaller photo frames on the sides, white butterflies and soft glowing lights on a blue background. The top has the word "Birthday", and the bottom has "HAPPY BIRTHDAY" with a big name below it. Every result will look a little different, because AI tools create a new version each time.

Choose the Right Photo First

The photo you upload decides how good the poster looks. A few simple rules will help.

  • Use a clear photo of one person, facing the camera or slightly to the side.
  • Pick a photo with good light and a sharp face. Blurry or dark photos give poor results.
  • Avoid sunglasses, big hats and hands covering the face.
  • Use the original photo from your gallery, not one forwarded through a chat app.
  • Make sure the person is happy for their photo to be used. If the person is a child, ask a parent first, and think carefully before uploading it to any AI tool.

Step-by-Step: How to Make the Poster in Gemini

Step 1: Open Gemini

Open the Gemini app on your phone or the Gemini website in your browser, and sign in with your Google account. Features and limits can change over time and between accounts, so if an option looks different on your screen, look for the nearest match.

Step 2: Start a new chat

Start a fresh chat, so older messages do not affect the result. A new chat gives the tool a clean start.

Step 3: Upload your photo

Tap the plus or attach icon near the message box and choose your photo from the gallery. Wait until the photo appears in the chat before you go on.

Step 4: Paste the prompt and edit the name

Paste the prompt in the message box. Find the name NANI in the last part of the prompt and replace it with the real name. Check the spelling carefully, because the name will appear in large letters on the poster. If the photo is of a boy or a man, change the word "girl" to "boy" or "man".

Step 5: Send and wait

Send the message and wait for the image. It may take a few seconds. If the tool replies with text instead of an image, add a short line such as "Please generate the image" and send again.

Step 6: Review the result

Look carefully at the poster. Check that the face looks like the person, the name is spelled correctly, the text is readable and the layout matches your idea. AI tools sometimes make small mistakes in letters, so zoom in on the text.

Step 7: Ask for changes

If something is not right, you do not have to start again. Write a short follow-up message in the same chat, such as "Make the name spelling exactly NANI", "Make the white outline thicker" or "Use fewer butterflies". Make one or two changes at a time, since too many instructions in one message can confuse the tool.

Step 8: Save the poster

When you are happy with the result, open the image and use the download or save option. Keep the original file, so you can use it again or edit it later.

How to Customize the Prompt

You can change small parts of the prompt to get a completely different poster. Here are some easy changes:

  • Name. Replace NANI with any name.
  • Color. Change "soft blue gradient" to pink, purple, green or gold, and change the color of the name to match.
  • Decoration. Replace the butterflies with stars, flowers, balloons or sparkles.
  • Headline. Change "Birthday" at the top to a short word in another language.
  • Shape. Change the ratio to 9:16 for stories and reels, or to 1:1 for a square post.

The words "ultra-realistic, 8K resolution" in the prompt describe the style you want. The real size of the image depends on the tool, so do not worry if the file is not exactly 8K.

Turn the Poster into a Video in Alight Motion

A poster is nice, but a short video often gets more attention. You can bring the poster into Alight Motion and add movement in a few minutes.

  1. Create a new project in a vertical 9:16 size.
  2. Add the poster as a photo layer and fit it to the screen.
  3. Add a slow zoom or a gentle slide, so the poster feels alive.
  4. Add a soft glow or sparkle layer if you like.
  5. Add a music track and trim it to fifteen or twenty seconds.
  6. Export as 1080p MP4 and share.

Tips for Better Results

  • Use a photo where the head and shoulders are fully visible. The cutout style works best with a clear outline.
  • Keep the name short. Short names usually come out cleaner than very long ones.
  • Write the name in capital letters in your message if the tool keeps changing the spelling.
  • If the first result is close but not perfect, ask for changes instead of starting again.
  • Generate two or three versions and pick the best one. Small differences can matter a lot.
  • Check the image on a big screen before you post, because small mistakes are easier to see there.

Where You Can Use the Poster

A birthday poster is useful in many places. You can post it as a WhatsApp Status, send it privately as a surprise, share it on Instagram as a picture or a story, or use it as the first frame of a reel. Some people print it as a small poster for a party. If you plan to print it, make sure the file is large enough, and check the quality before you send it to a print shop.

Common Problems and Easy Fixes

The face does not look like the person. Use a clearer, front-facing photo and add a line such as "Keep the face exactly the same as the uploaded photo".

The name has spelling mistakes. Ask the tool to fix the spelling, or add the text later with a photo editing app.

The poster has too many decorations. Ask for "fewer butterflies and a cleaner layout".

The result is not in the right shape. Mention the ratio again, such as "Make it 3:4 portrait".

The tool does not create the image. Try again after a few minutes, start a new chat or check whether you have reached a daily limit.

Privacy, Permission and Rights

Only upload photos that belong to you or that you have permission to use. Do not upload photos of other people without asking them, and be extra careful with photos of children. Avoid uploading private or sensitive images to any AI tool. Images made with AI may carry a label or a hidden mark, and the tool has its own rules, so read them before posting. Avoid photos of celebrities, and do not use the poster to mislead anyone. I do not host any photos on this website.

Frequently Asked Questions

Is this free?
Gemini may offer free image creation with daily limits, and the limits can change. Check what your account includes.

Can I use this on an iPhone?
Yes. You can use Gemini on the web in a browser on any phone, and apps are available on many devices.

Can I use the prompt for a boy or a man?
Yes. Change the word "girl" to "boy" or "man", and change the color and the name if you like.

Can I use my own words instead of "Birthday"?
Yes. Change the text inside the quotation marks in the prompt, but keep it short so the letters come out clearly.

Will the result be the same every time?
No. AI creates a new version each time, so you can try again until you get one you like.

Final Words

With one clear photo and a good prompt, you can make a birthday poster in a few minutes. Check the name, ask for small changes and save the best version. If you get stuck on any step, leave a comment under this post and I will try to help.

For more Alight Motion templates, AI photo prompts and simple editing tricks, keep visiting Editaurastudio and follow the channel so you do not miss the next one.