The model looks great, but the back of the helmet is wrong. The whole keyhole area is pushed upward and the back of the dome is pushed down. At the front the right side of the brow is wonky, while the dent looks wrong with that flat center:
[ATTACH=full]219821[/ATTACH] [ATTACH=full]219822[/ATTACH]
I'm not bashing what you did here, just offer some constructive criticism.
I really love how good it looks with the texture made from the stencils. Keep up the good work!