Since your screen is most likely flat, you'd have to hold the camera directed straight at it and at a bit of a distance in order for their face not to get disto

Since your screen is most likely flat, you'd have to hold the camera directed straight at it and at a bit of a distance in order for their face not to get distorted by perspective. Even a slight angle would make it appear to the algorithm that they have too big of a forehead/chin, or an asymmetric face (otherwise known as a 5/10).