Use this full structured prompt in Nano Banana with your own photo as input.
Prompt (copy everything between quotes):
"Use the uploaded photo as the ONLY and EXCLUSIVE identity reference. The portrait must clearly depict the SAME REAL PERSON from the uploaded image, not a generic model or a different person. Face, hair and gender expression must remain 100% identical to the uploaded photo (absolute identity lock: no morphing, no beautification, no age, gender or ethnicity change).
Preserve 100% of the facial traits from the uploaded photo: same facial structure and proportions, head shape, jawline, chin, cheekbones, nose shape, mouth shape, lip thickness, eye shape, eyelid type, eyebrow shape and density, and natural skin tone (converted into grayscale values only, without changing features). Keep the same hairstyle family from the reference (overall length, volume, hairline, parting and silhouette), only adapting it into wet, messy strands while keeping it instantly recognizable as the same hair. Respect the original gender from the uploaded photo 100%, maintaining the same gender expression, body type and overall look; no feminization, no extra masculinization, no shift toward androgyny and no ethnicity change.
Transform the uploaded portrait into an ultra‑realistic, cinematic black‑and‑white extreme close‑up of the same person’s face. Use a very tight crop so that only one intense eye, part of the nose and a portion of the lips are visible within the frame, with the rest of the face fading out toward the edges. Keep a vertical composition that feels immersive and intimate, filling the frame with skin, hair and shadow.
Make the visible eye the absolute focal point of the image. It must be razor‑sharp, with a strong reflective catchlight that conveys a deep, emotional and intense expression. The gaze should feel piercing and thoughtful, with detailed iris structure (rendered in monochrome tones), crisp eyelashes and clearly defined eyelids, while the surrounding skin remains equally realistic but slightly softer in focus.
Cover parts of the face with wet, messy strands of dark hair that fall chaotically across the forehead, eye and cheek. Hair should look soaked, with clumped strands, small droplets and natural randomness, partially obscuring the eye without completely hiding it. The direction and placement of the strands must still respect the person’s original hairstyle and hairline, only styled into a dramatic wet, disheveled look.
Render the beard as thick natural stubble or full beard, matching the real facial hair pattern from the reference photo. Show hyper‑detailed texture in the beard: individual hairs, varied density, and subtle transitions from beard to bare skin. Skin texture must be ultra‑realistic, with visible pores, fine lines, micro‑wrinkles and subtle imperfections that enhance the rugged, cinematic feel.
Use high‑contrast monochrome lighting with a dramatic low‑key studio portrait style. Soft highlights should fall across the visible eye, cheekbone, nose bridge and lips, while deep shadows gradually fade into black around the edges of the frame. Create a strong chiaroscuro effect that sculpts the face and hair with light and shadow, avoiding flat or evenly lit surfaces.
Keep the background completely dark or nearly black, blending seamlessly with the shadowed parts of the hair and face. Use shallow depth of field so the eye remains in razor‑sharp focus while hair further from the eye, beard edges and background dissolve into soft blur. The overall mood must be cinematic, tense and atmospheric, like a frame from a high‑end black‑and‑white movie trailer.
Quality and finish: ultra‑detailed realism in pure black‑and‑white, 8K resolution, vertical composition. Maintain sharp focus on the eye and immediate surrounding skin, with controlled grain, smooth tonal transitions and rich blacks without crushing detail. The final image should feel like a professional studio low‑key portrait, powerful enough for an editorial poster or movie key art, while fully preserving the person’s real identity, facial structure, hairstyle and gender from the uploaded photo.
Negative prompt (optional, if supported): low resolution, blurry, soft focus, flat lighting, low contrast, washed‑out grays, cartoon, anime, manga, chibi, 2D flat illustration, painterly low‑detail style, plastic skin, over‑airbrushed beauty filter, posterized tones, heavy noise, pixelation, distorted anatomy, melted face, different person, wrong gender, incorrect hairstyle, wide‑angle distortion that warps facial features, visible text, logo, watermark, UI elements, frames with text, busy or bright background.
Do NOT change the subject’s facial identity, hairstyle family or gender at any point: the black‑and‑white extreme close‑up portrait must remain instantly recognizable as the SAME REAL PERSON from the uploaded photo, with 100% identity consistency.