This doesn't really matter, but... I don't think it's possible that Trump's ear was hit directly by a bullet.
For one thing, there's no bullet trajectory that could hit the front part of his ear like this, without then going into his head. But also, look at the angle of his head, relative to the shooter's position. I think his ear was hit by something from behind the podium. Maybe a fragment of one of the bullets, after it struck something behind the stage?