故事书插画提示，采用柔和水彩风格

{
  "prompt": "Use the uploaded image strictly as an identity reference. Transform it into a soft storybook-style illustration with smooth graphite-and-pencil linework, rounded shapes, and gentle hand-drawn imperfections. Apply airy pastel colors with a watercolor-pencil blend effect, subtle gradients, and light bloom highlights. Keep colors fresh and lively while remaining natural. Add delicate cross-hatching for shadows and a paper-grain texture. Facial features are simplified and cute: rounded faces, tiny dot eyes, short curved eyebrows, and a calm closed-mouth smile. Overall look should feel cozy, nostalgic, and whimsical, like a children’s picture book illustration.",
  "style": "storybook pencil + watercolor-pencil blend",
  "lighting": "diffused daylight glow",
  "color_palette": "soft pastels with fresh highlights",
  "texture": "paper grain, cross-hatching, watercolor-pencil wash",
  "face_style": "cute simplified features, dot eyes",
  "proportions": "chibi-leaning semi-realistic",
  "mood": "whimsical, cozy, nostalgic",
  "background": "light, airy, minimal shapes with soft pencil fills"
}