Duo Portrait Prompt for Nano Banana Pro

{
  "image_generation_prompt": {
    "subject": {
      "description": "{argument name="subject description" default="two young women standing outdoors together in a garden setting, smiling and posing side by side, wearing soft pastel dresses, Use uploaded reference image, keep identity exact"}",
      "identity_lock": "STRICT — Use uploaded reference image, keep identity exact. Preserve both faces, hair, eyes, proportions. Do not alter identity.",
      "pose": {
        "type": "standing duo pose",
        "body_position": "standing close together with arms lightly around each other",
        "interaction": "friendly and relaxed posture",
        "head": "both slightly tilted toward each other, facing camera"
      }
    },
    "face_details": {
      "instruction": "Use uploaded reference image, keep identity exact",
      "expression": "soft natural smiles",
      "skin": "natural skin tones with gentle sunlight glow",
      "eyes": "looking toward camera with warm expressions",
      "clarity": "both faces sharp and clearly visible",
      "focus_priority": "maximum facial clarity for both subjects"
    },
    "hair": {
      "instruction": "Preserve hairstyles exactly",
      "style": "one with blonde loose waves, one with long straight brunette hair",
      "details": "natural movement and shine"
    },
    "clothing": {
      "outfit": "{argument name="outfit" default="pastel dresses, one light yellow sleeveless dress and one light blue fitted dress with structured bodice"}",
      "details": "soft spring aesthetic, light fabrics",
      "accessories": "minimal jewelry, subtle name tags"
    },
    "environment": {
      "setting": "garden or park",
      "background": "large tree, greenery, flowers, pathway, soft natural landscape",
      "props": "natural outdoor elements only",
      "atmosphere": "bright spring day, fresh and airy"
    },
    "lighting": {
      "type": "natural sunlight",
      "quality": "soft diffused daylight",
      "direction": "front natural light illuminating faces evenly",
      "effect": "enhances skin tones and pastel colors",
      "imperfections": "slight natural shadowing from outdoor light"
    },
    "camera": {
      "type": "portrait photography",
      "lens": "50mm lens",
      "angle": "eye-level",
      "distance": "medium shot with slight zoom",
      "focus": "sharp focus on both faces",
      "depth": "moderate depth of field with slightly blurred background",
      "zoom": "slight zoom to ensure both faces are clearly visible",
      "imperfections": "natural handheld realism"
    },
    "composition": {
      "style": "lifestyle portrait",
      "framing": "both subjects centered in frame",
      "balance": "symmetrical composition with natural background framing"
    },
    "effects": {
      "color_tone": "soft pastel tones with warm highlights",
      "finish": "clean, bright, natural look"
    },
    "quality