Cosmic Galaxy Watercolor Portrait (Identity Preservation) AI Image Prompt

A prompt for an image-to-image generation task, requiring 100% preservation of the subject's facial features and identity from an uploaded reference image. The style is a cosmic galaxy watercolor portrait, where the face is softly merged with vibrant nebula textures and stardust highlights, set against a deep space background.

Prompt

{
  "prompt": "Use the uploaded reference image to **preserve 100% of the facial features, identity, age, skin tone, and expression** of the person. Do not alter facial structure or proportions. Create a **cosmic galaxy watercolor portrait** where the face remains soft and realistic but is gently merged with nebula textures. Hair follows the exact reference style, with subtle stardust highlights woven through the strands. Clothing: simple dark or neutral attire that fades into swirling galaxy patterns. Background: deep space filled with vibrant nebulas, glowing stars, floating light particles, and watercolor galaxies in shades of indigo, teal, violet, and cosmic blue. Soft ethereal rim light outlines the silhouette. Fine pencil sketch lines mixed with watercolor bleeds, smooth gradients, dreamy depth, cinematic and artistic masterpiece quality.",
  "negative_prompt": "blurry, low quality, deformed, extra limbs, bad anatomy, watermark, text overlay, anime, cartoon, overexposed, underexposed, ugly face, bad hands, face altered, identity changed, harsh lighting, plastic skin, flat colors",
  "parameters": {
    "steps": 50,
    "cfg_scale": 7.2,
    "sampler": "Euler a or DPM++ 2M Karras",
    "strength": 0.53,
    "noise": 0.28,
    "width": 832,
    "height": 1216,
    "aspect_ratio": "2:3"
  },
  "usage_instructions": "Upload your image in img2img or reference mode. Keep strength around 0.5–0.55 to keep the face **100% matching**, while blending the portrait into a cosmic watercolor universe."
}

How to use this prompt

Copy the prompt above and paste it into an AI image generator such as Google Gemini (Nano Banana) or a similar tool. Replace any bracketed placeholders with your own details, then generate and refine the result.

This prompt is designed to work with a reference photo. Upload your own photo (only one you have the right to use) together with the prompt.

Prompt collection credit: YouMind Awesome Nano Banana Pro Prompts (CC BY 4.0). Credit to the original prompt creators. To request removal of a prompt or image, please contact us.