Distance and lens: take a step back
The single biggest difference between a selfie and a source photo is distance. A phone lens held at arm's length is very close to your face, and at that range it widens the nose and jaw and pushes the ears back. It looks normal because you see it every day, but an AI model trained on those frames learns the distortion as your face.
Ask someone to take the photo from about 1.5 m or 5 ft, or prop the phone up and use the timer. If your phone has a 2x or 3x lens, use it. Then let the face fill roughly a fifth of the frame width or more. Standing further away and cropping later is fine, as long as the crop is still sharp.













