The skin on the upper part of that cavity looks like it was stretched too much, I think you could maybe make it as if it was ripped, or something like that.
Shoe
too tall or too skinny, cant tell without context.
but dayum, dem shoes are meant for some oddly shaped feet.
could also use some more umph in his squads, as it stands someone definitely skipped leg day at the gym.
otherwise its looking like quite an interesting project