Nano Banana JSON Prompt Structure

{  
"prompt": "A sunny outdoor lifestyle portrait of a woman sitting gracefully on white stone stairs, wearing a delicate floral bikini. She sits with her legs crossed and arms resting naturally, her wavy dark hair falling loosely over her shoulder. Soft dappled shadows from nearby foliage fall across her body and face, adding texture and depth. Her expression is calm and relaxed, embodying a summery aesthetic. The setting features clean white stucco walls framing the staircase, creating strong geometric lines and balance. Vibrant flowers cascade adding a bold pop of color against the neutral backdrop. A glimpse of clear blue sky in the upper portion enhances the bright, serene mood. A subtle, ethereal glow emanates from the bougainvillea, casting faint, warm reflections on the stairs, suggesting a magical, summery aura.",  
"camera_settings": {  
"lens": "85mm prime",  
"aperture": "f/2.8",  
"shutter_speed": "1/500s",  
"iso": 100,  
"focus": "shallow depth of field, sharp focus on the woman's face and upper body",  
"lighting": "natural sunlight with soft dappled shadows",  
"white_balance": "daylight"  
},  
"negative": "no subtitles, no captions, no text/logos, no UI, no excessive sharpening, no HDR halos, no chromatic aberration, no lens dirt, no cartoon/anime look, no abrupt cuts or zooms, color, sepia, cyan tint, illustration, CGI, plastic skin, over-smooth skin, motion blur on subject, blown highlights, HDR halos, posterization, extra limbs, duplicate legs, readable text or logos, watermark"  
}