I have a slight suggestion; redo the side angle (Proporations looks nearly entirely off--back needs to arch more, the hair looks odd, and the shape of the head looks far too much like some of TOEI's, well, 'crappy' artists' style). Other than that I'm impressed by the front view, it'll probably be the first Vegeta model with a torso that suits my liking. I love the proportions and his shoulders fit the body (which appears to be USS "Super Vegeta"), just give it some bigger deltoids.
I was trying to find a screencap of the episode Vegeta was drawn the way you did your ref, but the drawing style was never consistant(which ever was?) If you'd like check YouTube for episode #143 'Krillin's Decision', the style can be seen when Cell was begging Vegeta to let him go--look for the part 1 uploaded by 'superfranthemansuper' and scroll to 05:13 -> 05:26. The drawing style picked up again during the episode 'Trunks Ascends' (which actually wasn't consistantly used through the entire episode but only after Trunks had powered up--this is because several artists for the animation switched off during some episodes, that's why there are differences in proportion, anatomy & physics sometimes). I have many preferences over drawing styles used in the Dragon Ball Z anime, it's so hard to decide but it's nice to see someone's attempting that look. Good luck.