This is going to be a long post even when in brief, so don't go blaming me for it being long guys. I'm being as short as possible here this time.
--Head is possibly too large (explained further down).
--Hands too small (a hand can cover the face quite a bit. This is easiest way to prevent hand errors).
--Feet too small
--If he's a kid, then head size isn't as far off, but still off, as well as the torso size is fine as well (IF he's a kid only).
--If you want this to be an adult, then you need to make torso, arms and legs longer.
--If this is a male, neck must be a lot wider. If it's a female, face needs to be changed but neck is fine.
--Hand on our right is facing a bad direction.
--Feet are wrong shape. Toes should point upwards on shoes, feet have a curvature underneath. Hard to explain, so please refer to a real foot picture to understand.
--Upper arms are too short, the length of the upper arm is supposed to be the same as the lower arm. Arms not as long as torso (but should be).
--Ends of arms get too thin before the hands start.
--Ends of pants where feet start need to be redone, they are done poorly.
--Keep shirt folds so they face outside the body. It only looks bad because there's no fold that goes outside the body on the left. Due to his angle, you should have it flow mostly to the left.
--Left sleeve is longer than right sleeve
--No collar.
--Shape of face is risky, and will lead to possible screw up.
Edit: Took out a bid chunk of nonsense