It probably is the highlighting yeah, anyway I still like the look of it so I am keeping it.
I am planning on keeping a human underneath the mask.

The brown parts look like rusty metal pipes. Not that good actually.

I dont think they look rounded at all, if anything just bended rusted metal plates
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Updated

bump
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also wearing ingame rn. So guess check there for better view.

It looks pretty bad ass so far and that eye color was the perfect choice. The edges around the part that covers the mouth look rough, clean those up you pleb.

The grated bits you added to the mouth part look really nice too. If you don't win this one then I'm going to riot.

eyebrow?

Lmao, this made my day for some reason, dont know why I forgot to add eyebrows. thanks veoo.
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K0tha I know still going to clean everything up more. But its hard for me to keep working on one piece so I make one piece go to next go back to refine make new etc. Just trying to work on what I feel like so I get most fun out of it. But I will defenetly clean it up.

http://imgur.com/a/8Wcof
Did skin and made eye better nothing mayor as there going to be stuff added still so not posting in OP

Out of all the heads you've made so far, this is my favorite by a long shot.

So what happened to the idea of hair, have just just given up on that entirely?

Hair is still a possibility, I am brainstorming about what to add. Dont want to rush to hair and later get a better idea you know XD