PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment is a lightweight, relaxed-fit material, likely rayon, viscose, or soft cotton. Unlike the user's current stiff, quilted puffer jacket, the new shirt must exhibit fluid dynamics with low structural rigidity. It should absorb light with a soft, matte finish, avoiding the synthetic sheen of the current puffer jacket. - **Key Features:** The distinctive "camp collar" (open neck) structure must be preserved and warped to fit the profile view. The white floral/botanical print on the black background must maintain its aspect ratio without stretching during the perspective shift. The black buttons and the left breast pocket pattern alignment are critical details to retain. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** Significant volume reduction is required. The current puffer jacket adds artificial bulk; the simulation must estimate the user's true anatomical torso size underneath to drape the shirt correctly. The shirt is short-sleeved; therefore, the user's forearms (currently covered by long jacket sleeves) must be generated or synthesized with skin texture matching the face. The shirt should hang loosely from the shoulders, with a vertical drape due to gravity, breaking slightly at the lower back due to the user's posture. - **Occlusion Handling:** The user's hands are currently inside the jacket pockets. In the target state, the simulation must interpret the hands as being placed in the *pants* pockets. Consequently, the bottom hem of the Hawaiian shirt should bunch slightly or drape over the wrists/forearms at the hip line. The user's beard and jawline must layer *over* the new open collar. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The user's environment has cool, diffuse overhead lighting (evident from the reflection on the grey wardrobe and the floor). The source shirt has warm, directional studio lighting. The shirt's lighting must be cooled significantly to match the room's white balance. Shadows must be cast downwards and slightly towards the user's back to match the shadow under the user's jaw. - **Color Calibration:** The "white" of the floral pattern must be color-graded to match the neutral/cool white point of the room, removing the yellow/cream tint from the source image. The black background of the shirt should be leveled to match the black point of the user's trousers. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** Absolute pixel preservation is required for the user's hair, forehead, eyes, nose, mouth, beard, and ear. The masking boundary should start strictly below the Adam's apple to allow for the new open-collar neckline. - **Body Integrity:** Do not retain the silhouette of the puffer jacket. The user's underlying shoulder width and torso depth must be estimated realistically. Do not slim the user's actual anatomical frame, but do remove the excess padding provided by the source image's winter gear.