Overused render probably, and overused character, but I was testing out some stuff while working on a sig request with this render and came up w/ this:
(Reason for lack of text+depth being I didn't know which one I thought was best, so I left it out.)
CNC?
V1(Original)

V2(Some more contrast on the render)

V3(Cooling photo filter)

V4(Warming photo filter)Probably my fav

V5(Sepia photo filter)