Wahaa, good ol' goku! CC time!
As pat already said, he has a bit shorter legs.
You need some work with drawing hands, i barrely noticed the thumb on the right fist, it looked like a fifth finger at first sight.
You did a blue band on the right leg, but no band on the left one?
The down most leg drapping could use some refinement...Overall drapping could use work :/ Altho in some spots it's great.
The right arm's shading isn't on the right (not right as in not where it is supposed to be and not as in not left) side, or maybe it's just me.
The colouring is pretty much spot on, i actually like this style goku :3 Overall nice drawing, but could use some refinement on little details