I've been stressing myself out to hard during the last few days.. so I tried to relax tonight and ended up with this one. Started as a sketch and turned into quite an experiment, I played around with masks and effects and textures, learned a lot!
Quite happy with it actually, even though it's nothing special.
Done in Photoshop in... too long, maybe 4 hours? No refs, textures from cgtextures.com.