At Least It's Not On My Sleeve

Nikohost wanted me to draw a black & green anthro wolfy that was some how digital or mechanical.
I had no idea on how to make him mechanical & I thought about doing something like a window/mechanical area around his heart but...Didn't work out to well.
I did try to draw 4 bolts around his hear but cuz their grey & the wolfy is black you can't tell.

only thing I don't like about it is some spots aren't seen very well because of the black contrast also the green hair on the sides look more like weird green blush.