Lighting: Face a window during the day for soft, even light. Avoid overhead lights, which cast shadows under the eyes and chin.
Background: Stand 4–5 feet in front of a plain, light-colored wall so no shadow falls behind you. A blank white or off-white wall works well with this tool's background cleanup.
Distance & camera: Hold the phone at eye level about 4–5 feet away and use the rear (main) camera — a close-up front camera selfie distorts facial proportions.
Pose: Look straight at the camera with a neutral expression or natural smile, both eyes open, and no glasses or headwear (except for religious or medical reasons).
Then upload the photo above: zoom and drag to frame your face, align the head-height guide lines, choose a background, and generate the exact 1200 × 1200 px file.