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[Subject] Split-screen comparison image featuring the same young woman holding a Monster Energy can toward the camera in both panels. She appears early 20s, feminine presentation, slim build, light olive skin, long black hair in a high ponytail, thin round metal glasses, medium hoop earrings, bright friendly smile, and a black sleeveless top. In the left panel she presents the can closer to center with a sharper, more complete product read. In the right panel the can is also extended toward the camera, but the framing and focus create a slightly different product-hand interaction. The product is a black Monster Energy can with the bright green claw logo and visible white brand text.
[Environment] Indoor room with cool blue ambient light and a softly blurred background. A chair back or furniture edge is visible behind the subject, and a partial glowing wall sign or blue light source appears in the rear. The scene is designed as a model benchmark testing product integration, brand readability, and hand-object realism in a casual influencer selfie-like setup.
[Composition/Camera] Vertical 3:4 canvas divided into two equal rounded-corner columns separated by a narrow divider. Both panels are chest-up portraits with the subject centered and one arm extended holding the can toward the lens. The can occupies the foreground in each panel and should be readable enough for logo visibility. Bottom labels identify the left as "SEEDREAM 4" and the right as "NANO-BANANA". Near the lower middle between panels, small white text reads "Prompt: La chica mantiene un Monster". The comparison should feel clean and legible, built for side-by-side evaluation.
[Lighting] Soft mixed indoor lighting with cool room ambience and gentle frontal fill on the face and can. The product can should have enough specular highlight to read as metallic aluminum while keeping the green logo crisp. Skin tones remain natural, and the room stays softly subdued in the background. No harsh flash or dramatic shadows.
[Style/Rendering] Photorealistic product-integration benchmark image. Clear facial realism, realistic hand anatomy, believable can proportions, sharp brand logo, natural indoor blur, and clean social-media comparison formatting. The mood is part lifestyle portrait, part technical product-placement test. No illustration, no stylized poster effects beyond the simple labels.
[Detail constraints] Keep exactly two comparison panels, one Monster can foreground in each, one woman with glasses and hoop earrings, and the bottom labels "SEEDREAM 4" and "NANO-BANANA". Preserve the cool-lit indoor room and the small prompt note near the bottom center. Do not add extra products, extra people, or clutter. This is a controlled product-integration comparison.

Negative prompt: single panel only, unreadable can logo, wrong beverage branding, extra cans, missing glasses, distorted fingers, cluttered background, painterly texture, cartoon rendering, watermark, overdramatic lighting, missing bottom labels.

Suggested parameters: aspect ratio 3:4, 35-50mm lifestyle-product portrait feel, moderate depth of field, 28-36 steps, CFG/style strength 6.5-8, sampler DPM++ 2M Karras or equivalent, seed around 455117.

Delta prompt strategy:
1. If the split-screen disappears: add "two equal vertical comparison panels with a narrow divider and matched product-hold pose".
2. If the can branding becomes unreadable: add "black Monster Energy can with bright green claw logo and visible white brand lettering".
3. If hand anatomy fails: add "natural realistic hand gripping the can, fingers proportionate and clearly wrapped around the aluminum can".
4. If the subject identity drifts: add "same smiling woman with high ponytail, round glasses, hoop earrings, and black sleeveless top in both panels".
5. If the room loses coherence: add "cool blue-lit indoor room with soft background blur and faint glowing sign".
6. If the prompt note disappears: add "small white text near lower center reading Prompt: La chica mantiene un Monster".
7. If the product is not prominent enough: add "foreground can closer to the lens than the face, product integration benchmark emphasis".
8. If the image looks like an ad campaign: add "casual influencer-style product hold photo, not a polished studio advertisement".
9. If lighting is too dark: add "soft indoor fill with metallic highlights on the can and natural skin exposure".
10. If labels disappear: add "bottom left label SEEDREAM 4 and bottom right label NANO-BANANA in warm yellow text".