"edit type": "creative composite layering",

{
  "edit_type": "creative_composite_layering",

  "source": {
    "_hint": "Base logic: Character (Ref 1) superimposed ON TOP OF the Background Image (Ref 2).",
    "mode": "EDIT",
    "reference_images": {
      "first": "foreground_character_person",
      "second": "background_scenery_or_pattern"
    },
    "preserve_from_first": {
      "same_person_or_group": true,
      "same_faces": true,
      "same_hairstyles": true,
      "same_outfits": true
    }
  },

  "identity": {
    "keep_identity_consistent": true,
    "expression": "bright_engaging_smile_at_camera"
  },

  "camera_effect": {
    "_hint": "High-angle selfie style, creating a sense of depth between the hand and face.",
    "perspective": "high_angle_shot_

...