I think this rocks!
Anyway, my knitpicks:
To the left, by your chin, theres a line, sort of looks like theres a black rope, or some black thing, that disrupts the smoothness of the surrounding black. I know that was probably worded horrendously, but I have no clue what that thing is, so I can't actively describe it. But if you look, you'll see it.
And the eye on the left, your right eye, has a red vein visible, but the way it's shaped, sort of a backwards "c" makes it look like a red reflective spot since it's right on the edge. Normally I wouldn't say to fix it since it's "natural" but since your other eye is such a clear white I suggest you fix it digitally.
I personally think the crop you did works for the shot. It's a weird hunch, but I think if you crop the chin it'll look less *realistic*. Don't ask me to explain what I mean, cause I'm not too sure, but with the fading AND cropping it would look more like an artsy composition, whereas with the chin in full, it's a more realistic (life wise) portriture. Eh. I hope you get what I'm saying.