So, most of the things I draw are cartoons, really, so I've been trying my hand at realism lately. Critique is greatly appreciated (seriously, just tear 'em to shreds)
I think they look great and show off your unique style. Nice work with the shading too. But if you are aiming for something even more realistic, you can explore a bit more about facial and body proportions.
That's pretty good! Although the main thing bothering me is the way you outline the drawing. My art teacher taught me not to do that, because in real life do people have outlines around their bodies? No, so outlining on a realistic piece hurts its overall look. If you make dark line somewhere, make sure there is also shadow (shading) to accompany it as well, if you get what I mean. Stand-alone lines are not good.
"If you ever have a problem don't say 'Hey God I have a big problem.' Rather 'Hey Problem... I have a big God and it's all going to be okay."