Critique time!

Thanks to Proko for face and head tutorials

Yeaaaah, as silly as it sounds? I think that I can't draw profiles or profile-clothing. XD Anyone willing to give critiques or references? Please post!

I may need to redraw the sketch and try to make it a little more 3D. ...should I have tried to draw a 3/4 instead? Or is it more that I should try to just redo the shirt? I shall not be defeated by this sketch!
(And, as much as I may whine, I'm pretty happy with what is already there. Everything can just be better!)

So all critique is welcome!

Edit: Oct 18
Corrected Tre's shirt and jeans, thanks to my friend who found a couple nice references!