Finally! I've done them all! (Not counting the Metaluna Mutant because it's rather ugly and I couldn't see translating it into a pinup).

My plan was to use no or VERY little gradients in all of these, but when I was playing with the violin, I really liked the shine I could give it. So I kept it. I figure if I want to add any gradients to the others later on I can, once I've left them to sit and I can look on them with a fresh eye in a few months.

In the reference I found, the old school Phantom's mask is blue.