Thank you. Yes, that is NMM. Gotta hand it to Rackham for making it popular. I find it looks better than metal paint, and it's more fun to do. My first attempts look like poo, but I'm happy with my progress.
I've tried to in the past, but my brain seizes up as I try to explain it. I'll say this much; sketch it out if it helps, and doodle with gradients. I've learned that lighting doesn't need to be physically accurate (or even possible). If the blending is smooth, the brain will accept it.
Uber sweet. For some reason it reminds me of Ninja scroll. Perhaps it was what Ninja Scroll 2 was supposed to look like :P. I almost feel like putting this comment on the back view, that is my favorite part.