Human Practace

Its been quite some time since I've drawn a human face, and I've never been perticularly great at drawing them from memory anyway, so thought I would practace drawing a bunch of them from reference!
I need to get good at it for when work eventually begins on my other comic, Cymorg. Most of these references I got from typing 'tough guy' into a stock art website, which is why thier all a bit sinister looking XD The long haired fellow, however, I based off the nearest DVD box at hand - Dorian Grey from League of Extraordinary Gentleman XD