# GPT Image Hub prompt

## Portrait Galactique à l'Aquarelle Cosmique
- URL: https://www.gptimagehub.com/fr/library/cosmic-watercolor-galaxy-portrait
- Generator URL: https://www.gptimagehub.com/fr/generate?promptId=oss-ym-mm-6163
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Ffr%2Flibrary%2Fcosmic-watercolor-galaxy-portrait
- Category: Affiche et illustration
- Model: seedream-4-0
- Aspect ratio: 2:3
- Style: painterly
- Tags: portrait aquarelle, art galactique, nébuleuse, céleste, préservation du visage, img2img
- Updated: 2026-10-27T23:00:03.098Z
- Created: 2026-10-27T23:00:03.098Z

Transforme un portrait en illustration à l'aquarelle cosmique tout en préservant l'identité du visage. Personnalisez les tons de la nébuleuse et la tenue vestimentaire.

### Full prompt
```text
{
  "prompt": "Cosmic galaxy watercolor portrait of the person in the reference photo, preserving their facial features, identity, age, skin tone, and expression. The realistic face softly merges with nebula textures. Hair follows the reference photo style with subtle stardust highlights woven through strands. Clothing is [simple dark attire] fading into swirling galaxy patterns. Background of deep space with vibrant nebulas, glowing stars, floating light particles, and watercolor galaxies in shades of [indigo, teal, violet, and cosmic blue]. Soft ethereal rim light outlining the silhouette, fine pencil sketch lines mixed with watercolor bleeds, smooth gradients, and dreamy depth.",
  "negative_prompt": "blurry, low quality, deformed, extra limbs, bad anatomy, watermark, text overlay, anime, cartoon, overexposed, underexposed, 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 the reference photo in img2img or reference mode. Keep strength around 0.50–0.55 to preserve facial identity while blending the portrait into a cosmic watercolor universe."
}
```