look at the shading on his shoulders, arms, and upper torso...and then you have to ask yourself, where the hell is the light coming from??
that's what my unschooled opinion tells me la.
If the light is from the top left, then it's quite possible I guess. Cuz his hair may be block some light and such but yeah his left arm. I don't know man. I feel like I'm invading 'his' privacy by scrutinizing every bit of the picture and I sure don't feel good about it. LOL
if it's from the top left. he won't have the massive shadow on his right shoulder la.
and his left shoulder shouldn't be so shiny also, should be blocked partially by his head and hair.