They look pretty sweet. With the head I feel there should be a bit more depth around the glass area (sorry if I'm mistaken with it being glass). Also I personally don't like the colours on it, unless that was requested by someone, then I completely respect it.
From what I can see, it looks as if you put a fair amount of time into this, I would love to see more work from you. Keep it up mate. 9/10 here.