aspect ratio 9:16 , Keep the person exactly as shown in the reference image with 100% identical facial features, bone structure, 4K details, { "category": "portrait_creator", "category_reasoning": "A single person posed casually for a social media or personal portrait, looking directly at the camera.", "adaptable": "subject", "subject": "A young woman sitting casually on a high metal barstool chair, holding a smartphone in one hand and looking directly at the camera.",