PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The garment is constructed from structured, semi-aniline leather. It exhibits high flexural rigidity (stiffness) compared to the user's current top. The material requires anisotropic reflection; the smooth sleeves will show broad, satin-like specular highlights, while the "basket-weave" textured front panels will diffuse light and create micro-occlusion shadows within the weave. - **Key Features:** The intricate checkered/woven leather texture on the front panels is the primary visual anchor and must not be blurred. The silver-tone metallic zipper teeth, the stand-up mandarin collar, the horizontal waist seam, and the slight sheen of the leather grain on the sleeves must be preserved. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** Unlike the user's current skin-tight halter, this jacket has significant volumetric thickness. It must sit *off* the skin, particularly at the shoulders and waist. Due to the user's raised left arm (acute angle at the elbow), the leather sleeve must demonstrate "stacking" (thick, transverse creasing) at the inner elbow and pull slightly upward at the wrist, exposing the wrist bone. The jacket hem should fall naturally over the hips, overlapping the waistband of the grey jeans. - **Occlusion Handling:** The user's long, dark hair cascading over her left shoulder and back is a critical occlusion layer; the jacket collar and shoulder panels must be rendered *underneath* this hair volume. The user's left hand is clear of the torso, but the left sleeve must accommodate the arm's upward trajectory without warping the jacket's shoulder structure unnaturally. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The target environment is an outdoor twilight/dusk setting with soft, diffuse ambient lighting and background artificial warmth (the "SEVEN OAKS" sign). The source image is high-key studio lighting. The jacket's exposure must be lowered significantly to match the dim surroundings. The specular highlights on the leather must shift from studio white to the warm amber tones of the background lights and the cool teal reflection from the pool below. - **Color Calibration:** The leather's brown tone must be desaturated and slightly warmed to integrate with the ambient uneven lighting. Shadows must be soft and diffuse, mimicking the global illumination of the outdoor evening scene, rather than the harsh directional shadows of the studio shot. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** The user's profile view, jawline, ear, and the hand interacting with her face must be absolutely frozen. The mask for the head must include the hair strands falling over the shoulders. - **Body Integrity:** The user's torso width and arm thickness must be maintained. The simulation must add the jacket's material thickness *on top* of her current silhouette; under no circumstances should the body be slimmed or warped to fit the jacket's source shape.