K-pop idols on a train: GPT Image 2 prompt

{
"prompt": "Three K-pop idols sitting on a train. Left girl is Rosé with pale skin and long blonde hair, looking at a phone. Middle girl is Tzuyu with warm fair skin and dark brown hair, sleeping, making a peace sign. Right girl is Karina with sharp facial features and long dark hair, sleeping, wearing a navy vest. Uniforms: white shirts, navy plaid skirts, bow ties. Train window background. --ar 3:4",
"aspect_ratio": "3:4",
"subjects": [
{
"position": "left",
"identity": "Rosé",
"physical_characteristics": "slender face, pale skin, long straight blonde hair, soft monolid eyes, petite build",
"pose": "looking down, holding phone",
"outfit": "white cotton long-sleeve shirt, navy/white plaid pleated skirt, navy striped bow tie",
"items": "smartphone"
},
{
"position": "middle",
"identity": "Tzuyu",
"physical_characteristics": "elegant features, warm fair skin, large doe eyes, long dark brown wavy hair, tall build",
"pose": "head tilted left, eyes closed, right hand making peace sign",
"outfit": "white cotton long-sleeve shirt, navy/white plaid pleated skirt, navy striped bow tie"
},
{
"position": "right",
"identity": "Karina",
"physical_characteristics": "sharp V-line jaw, small face, fair skin, long straight dark black hair, AI-like flawless features",
"pose": "head tilted right, eyes closed, resting, legs crossed",
"outfit": "white cotton shirt, navy knit vest, navy/white plaid pleated skirt, navy striped bow tie, black patent leather loafers"
}
],
"background": {
"setting": "Train interior",
"details": "Black ribbed seat, window showing daytime suburban houses and power lines."
},
"color_grading": {
"style": "Natural daylight, slightly muted, soft contrast",
"lighting": "Backlit from window, diffuse interior fill"
},
"color_palette": {
"navy_blue": "#1C2841",
"white": "#F0F0F0",
"plaid_grey": "#5A6A7A",
"skin_tone_pale": "#F3E3D3",
"skin_tone_warm": "#EACCA9",
"hair_blonde": "#E8D3A2",
"hair_dark": "#1A1A1A",
"shoe_black": "#050505"
}
}