Edit the uploaded portrait by adding a realistic and naturally fitting mustache. Requirements:
- Preserve identity, facial structure, hairstyle, skin texture, lighting, background, and expression.
- Add ONLY a mustache.
- Automatically choose a mustache style that best matches the person's face shape, age, hairstyle, vibe, and overall aesthetics.
- Introduce natural diversity in mustache thickness, density, curvature, length, and grooming style.
- Avoid generating the same default mustache shape repeatedly.
- The mustache should feel organically grown and visually harmonious with the entire face.
- Match hair color, lighting direction, shadows, skin texture, and image sharpness perfectly.
- Maintain photorealism and seamless blending.
- Do not distort the mouth, lips, nose, or facial proportions. Possible styles may include:
classic chevron, soft natural, subtle stubble, pencil, modern trimmed, textured masculine, vintage thick, light curved, rugged, or minimalist styles. Negative prompt:
fake pasted mustache, identical mustache shape, sticker effect, distorted mouth, blurry texture, beard, goatee, facial deformation, low quality
