Is it normal for the plastron not to be flat on a baby tortoise? It was hard to capture in a picture but it kind of bulges the second acute down on his right (left side of the pic) on the light part and caves in a bit (on the black part).
He actually looks great. No marks. Nothing. Looks like you're doing a great job. My baby has specks and is still slightly disfigured from the yolk sack.