# GPT Image Hub prompt

## Chân Dung Màu Nước Thiên Hà Vũ Trụ
- URL: https://www.gptimagehub.com/vi/library/cosmic-watercolor-galaxy-portrait
- Generator URL: https://www.gptimagehub.com/vi/generate?promptId=oss-ym-mm-6163
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Fvi%2Flibrary%2Fcosmic-watercolor-galaxy-portrait
- Category: Áp phích và minh họa
- Model: seedream-4-0
- Aspect ratio: 2:3
- Style: painterly
- Tags: chân dung màu nước, nghệ thuật thiên hà, tinh vân, vũ trụ, giữ khuôn mặt, img2img
- Updated: 2026-10-27T23:00:03.098Z
- Created: 2026-10-27T23:00:03.098Z

Biến ảnh chân dung thành tranh màu nước dải ngân hà huyền ảo mà vẫn giữ nguyên đường nét khuôn mặt. Tùy chỉnh màu sắc tinh vân và trang phục theo ý muốn.

### 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."
}
```