Made this up to compare my TF2 spray, where I redesigned Siege's head to be as close to my own, with myself in the same position to figure out what's still off. Aside from the fact that the lighting in here sucksfor getting proper shadows, I got most of the facial structure pretty close. Also, couldn't quite match the pose exactly due to webcam camera.

My eyes cannot swing 90 degrees to the side the way Siege's eye apparently can.