Hi Mark,
I'd love to share, but I've been fooling around with it so much that it will be hard to reproduce. This is worrying me actually because I still have to do hands and arms.
Anyway, I basically used Andrea's flesh paint set, with added Vallejo burnt umber, some green washes and blueish washes (below the eyes mainly). I went for pretty high contrast and then covered everything again with several very much diluted layers of base colour to tone things down and tie everything together. Then I went back adding contrast. I think I repeated that cycle several times. At the end things became glossy so I finished with a layer of mat varnish.
I'd love to give the impression that this is the result of years of practice searching for the ideal method, but it really was more of an ongoing experiment fooling around with acrylics until I thought it looked like something.
I hope this is of any use!
Cheers,
Adrian