PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The target material is heavyweight black denim. It possesses high structural rigidity and low drape coefficients. Unlike the user's current thin cotton/blend top, the denim will not cling to the torso. Light interaction should be diffuse with low specularity, except on rigid fold peaks and metal hardware where sharp, localized highlights occur. - **Key Features:** The distinct "jean jacket" collar structure, the silver shank buttons (center placket and cuffs), the horizontal yoke stitching across the chest, and the vertical structural seams must be preserved. The waistband hem thickness and cuff rigidity are critical to maintaining the garment's realistic volume. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** The jacket adds substantial volume compared to the current sleeveless top. The shoulder line must be elevated slightly to account for the denim's thickness. On the user's bent elbows (clasped hands pose), the fabric must form rigid, angular creases (honeycombing) rather than soft folds. The jacket should hang relatively straight from the bust down, avoiding the inward curve of the current waistline due to the material's stiffness. - **Occlusion Handling:** 1. **Hair:** The user's long dark hair falls over both shoulders and the upper chest. The jacket collar and yoke must be rendered on a layer *beneath* these hair strands. 2. **Foreground Arm:** The arm with the tattoo on the far right is a foreground element (likely a reflection or second person); the jacket must be masked *behind* this visual obstruction. 3. **Hands/Wrists:** The jacket sleeves will cover the user's bare arms. The cuffs should terminate just above the wrist, allowing the user's hands and bangles to emerge naturally. The gold necklace will likely be obscured by the jacket's high buttoned collar. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The user scene has strong, warm directional light coming from the viewer's right. The black denim must generate highlights on the right sleeve, shoulder, and collar edge, while casting deep, soft-edged shadows across the left side of the torso and under the collar. - **Color Calibration:** The source image has cool, sterile studio lighting. The black denim must be color-graded to accept the warm, yellowish ambient light reflected from the cream walls and the user's skin tone. The black levels should be lifted slightly to match the dynamic range of the user photo, ensuring details (buttons/seams) don't disappear into crushed blacks. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** The user's entire head, including facial features, expression, bindi, makeup, and the specific flow of hair around the face, is strictly frozen. - **Body Integrity:** Do not apply slimming filters or warping to the user's underlying skeletal structure. The simulation must represent the additive volume of the jacket realistically; the user's silhouette should look wider than the original image due to the transition from a thin tank top to a thick outer layer.