Dude, that head is amazing. I have ben looking for many ways to describe my definition of a robotic texture, and that about sums it up. just widen+lower the visor and you have a fantastic head.
by hand i mean by mouse and burn/dodge/blur/smudge ect. :L no gradient tool ect.
The head is pretty nice, but the visor is to high. You should lower it a bit.