Portrait Éditorial de Mode avec Traînées Lumineuses

{
  "generation_request": {
    "meta_data": {
      "tool": "NanoBanana Pro",
      "task_type": "text_to_image_photoreal_editorial_portrait",
      "version": "v1.0",
      "priority": "high"
    },
    "references": {
      "character_reference_image": "the reference photo",
      "reference_rules": {
        "preserve_uploaded_character_identity": true,
        "identity_lock_strength": 0.99,
        "use_reference_for": [
          "face",
          "skin_tone",
          "facial_proportions"
        ],
        "do_not_copy_any_other_identity": true
      }
    },
    "output_settings": {
      "aspect_ratio": "4:5",
      "orientation": "portrait",
      "render_style": "photorealistic_high_fashion_editorial",
      "film_grain": "subtle"
    },
    "creative_prompt": {
      "scene_summary": "Moody high-fashion editorial portrait featuring the same woman as the reference photo. Dark studio background. Dramatic beauty lighting with warm light streak and motion blur across the torso from a long-exposure light-painting effect. Wearing a [silver chainmail/metal mesh] dress. One arm raised over head, hand resting on forehead. Elegant intense gaze. No text, logos, or watermarks.",
      "subject": {
        "identity_rule": "Must match the reference photo with strict facial lock",
        "expression": "serious, alluring editorial expression, confident gaze",
        "makeup": "defined eyeliner, softly smoky eyes, bronzed contour, satin nude lips",
        "hair": "sleek straight hair or smooth blowout, tucked behind ears"
      },
      "wardrobe_and_accessories": {
        "dress": "[silver metallic chainmail / crystal mesh] slip dress with draped neckline, reflective micro-texture, high-end couture feel",
        "earrings": "long statement crystal fringe earrings",
        "nails": "long clean nude nails"
      },
      "pose": {
        "upper_body": "right arm raised over head, hand resting on forehead, elbow bent; left hand near waist",
        "posture": "elongated neck, shoulders angled slightly, elegant fashion stance"
      },
      "effects": {
        "light_streaks": "warm golden light streaks and motion blur sweeping diagonally across the dress and torso, handheld light-painting long-exposure effect; face remains sharp",
        "motion_blur_rule": "blur only affects light streaks and a small portion of the dress; do not blur facial features"
      },
      "environment": {
        "background": "deep charcoal-black studio backdrop with subtle gradient, no props"
      },
      "lighting_and_camera": {
        "lighting": "dramatic studio key light from upper left with soft fill"
      }
    }
  }
}