if it's less of a tiny rectangle and mroe like rounded it might work?
the camera is facing slightly up, so while it's not exactly the hugest thing, it it at least the same size as/a little bigger than the bottom. here are my ugly lips as an example
straight on:
facoing up:
see how my top lip is fricking huge and my bottom is tinneee, but in facing forward they're about the same sizze? that's the camera angle. Even if my lips were angled away, you'd see more of the top lip since the camera would catch more of that plane. If the camera is pinting up, you'd see all the planes of the face that are downward. Like how you wouldn't see the top of the head, you wouldn't see the bottom lip as much since it points upwards more than the camera.
also wtf u mean look at that gorgeous drawing??