Engineer!

Try to fix the stroke of that hat, looks like it's distorted from resizing or something.
Try to fix the shading of that too, there's a hat exactly like that in the CS, it looks kinda obvious that was used and you tried to fix the holes of the symbols with rebuilding the shading.
I'd suggest changing the colour of that a little, to make it look a bit different from that hat.
.
Other than that, the idea is interesting.

I acutaly tried to redo the Miner's hat. I never knew there was any other hats in the CS because I basicly went by what was in bannedstory. :X


EDIT: While I was at it I made sniper!

I tried really hard on this one since there was basicly no nx items (except the hat) that looked anywhere like his outfit.