very nice, loving how its come together, especially in the back area.
the entire front and side sections could be raised a little, just to get the ear pieces central and visor just above centre. should mke a huge difference..
the shading on the yellow is ok, but the parts on the red should be removed i think. its just distracting.
a littl black vent on the mouth piece, like you added to the back would bring the two areas together nicely aswell.
im liking it sofar =)