main problem I see here is that both upper legs have a different length and his left lower arm also lacks foreshortening.
I mean in general it seems that there is no real foreshortening going on - it just looks like a doll arranged on a flat surface- if you get what I mean.
Especially if you look at the height of the knees and the length of the upper and lower legs, you see if you connect the poinst there, that the lines are all horizontal, but there should be differents in heights due to weight and perspective.
Also the shoulder usually moves a tad up, if we raise the arm.