prompt : 

\`\`\`{

  "subject": {

"biometric\_identity\_1": {

"biometric\_reference": "Ana de Armas",

"facial\_structure": "Heart-shaped face morphology, prominent zygomatic bones, defined jawline with 120-degree mandibular angle. Nose is straight with a slightly upturned tip. Lips feature a natural Cupid's bow with 1:1.618 volume ratio.",

"ocular\_details": "Hazel-green iris patterns (Hex: #6B8E23) with visible limbal rings and detailed radial furrows. Natural eyelashes with high follicular density.",

"dentition": "Natural dental alignment, white enamel (Hex: #F8FBF8), slightly rounded maxillary central incisors.",

"body\_morphology": "Ecto-mesomorph somatotype, height-proportional shoulder width, slender waist, 0.7 waist-to-hip ratio. Visible clavicle definition and athletic skin tonality (Hex: #E8BEAC).",

"hair": "Dark brunette (Hex: #2B1B17), sleek texture, styled in a half-up ponytail secured with a large black silk bow."

},

"biometric\_identity\_2": {

"biometric\_reference": "Sydney Sweeney",

"facial\_structure": "Soft oval face shape, rounded cheeks, distinct philtrum column. Large, slightly hooded blue eyes (Hex: #7398B1) with high-set eyebrows.",

"ocular\_details": "Sky blue iris with crystalline stroma texture and dark pupillary border. Deep-set orbital area.",

"dentition": "Slightly prominent maxillary incisors, bright white natural finish, straight occlusal plane.",

"body\_morphology": "Hourglass somatotype, high-volume bust-to-waist ratio, soft tissue distribution over muscular base. Fair skin tone with neutral undertones (Hex: #F3D9C1).",

"hair": "Ash blonde (Hex: #C2B280), straight, pulled back tightly into a sleek bun with a matching black silk bow."

}

  },

  "wardrobe": {

"material\_science": "Ultra-glossy vulcanized black latex (Hex: #0A0A0A), 0.4mm thickness. High specular highlights with sharp reflection falloff.",

"pieces": \[

"Ana: Sleeveless high-neck mock-neck catsuit, skin-tight vacuum fit.",

"Sydney: Long-sleeve high-neck mock-neck catsuit, seamless construction.",

"Accessories: Matching elbow-length latex opera gloves on all hands, graphite-finish smartphone (Hex: #3C3D3A) held by Ana."

\]

  },

  "pose\_action": {

"description": "Mirror selfie composition. Ana stands in the foreground holding the phone, smiling naturally at the mirror. Sydney stands slightly behind and to the side, looking towards the camera lens with a soft, neutral expression. Reflection integrity: mirror image must perfectly match the subjects' poses and facial features."

  },

  "scene": {

"location": "High-end luxury dressing room/bathroom. White marble vanity (Hex: #F2F2F2) with grey veining. Ornate gold-framed mirror (Hex: #D4AF37) with intricate carvings.",

"background": "Soft-focus walk-in closet visible in the reflection, featuring organized dark garments on hangers and warm interior architectural lighting."

  },

  "lighting": {

"setup": "Three-point high-key studio lighting. Warm overhead LED (3000K). Subsurface scattering (SSS) applied to skin textures for realism. Specular mapping on latex surfaces to capture room reflections.",

"technical\_specs": "Global illumination, ray-traced reflections, 8k texture resolution, micro-surface displacement."

  },

  "camera": {

"format": "9:16 vertical aspect ratio",

"technical": "Shot on 35mm full-frame sensor, f/2.8 aperture for sharp subjects and soft background bokeh. Eye-level perspective, zero distortion, chromatic aberration-free.",

"render\_quality": "Photorealistic digital twin, 100% biometric accuracy, high-fidelity skin pores and fabric micro-mesh."

  },

  "negative\_constraints": \[

"no logos",

"no text",

"no branding",

"no watermark",

"no extra limbs",

"no distorted fingers",

"no fused bodies",

"no beautify smoothing",

"no plastic skin texture",

"no unnatural teeth shapes",

"no messy hair strands",

"no blurry iris"

  \],

  "reflection\_integrity\_rules": "Mirror reflection must maintain 1:1 symmetry with the subjects, ensuring light bounces and shadow placement follow physical laws of optics."

}\`\`\`

[https://picxstudio.com/share/Uv5BQeU0yAach7PS](https://picxstudio.com/share/Uv5BQeU0yAach7PS)

I have been using Nano Banana to create consistent character images; prompt include