Nano Banana Pro JSON Prompt for 4-Photo Collage of Moods

{
  "scene": {
    "format": "4_photo_collage",
    "layout": "2_columns_2_rows",
    "aspect_ratio": "3:4",
    "label_position": "top_center_white_text",
    "background": "soft_minimal_studio_backdrop"
  },
  "subject": {
    "identity": "same_girl_from_reference",
    "appearance": {
      "hair": "[hair style]",
      "skin_tone": "[skin tone]",
      "features": "same_face_structure",
      "accessories": ["[accessories]"],
      "outfit": "[outfit]",
      "visible_area": "upper_body_chest_to_head",
      "makeup": "natural_glow"
    },

    "style": "hyper_realistic_portrait_photography",
    "camera": {
      "lens": "85mm_portrait",
      "framing": "upper_body_close_up",
      "lighting": "soft_diffused_beauty_light",
      "focus": "sharp_on_eyes_and_face"
    }

  },
  "photos": [
       { "mood": "[mood 1]", "expression": "[expression 1]", "label": "Angry" },
   
    { "mood": "[mood 2]", "expression": "[expression 2]", "label": "Depressed" },

    { "mood": "[mood 3]", "expression": "[expression 3]", "label": "Flirty" },

    { "mood": "[mood 4]", "expression": "[expression 4]", "label": "Laughing" }

  ],

  "render_style": {

    "detail": "micro_skin_texture_hair_strands_realistic_shadows",

    "color_grade": "natural_skin_tones_high_dynamic_range"

  }

}