Fimir - Marlwyrm Riders, Update 3

I've pretty much finished the skin on the marlwyrm. He still needs his underbelly and pustules painted, but the main area of flesh is about done. In the end I went for GW rakarth flesh washed with ogryn flesh and then worked up again with rakarth flesh layered up to about 3:1 rakarth flesh:white, then washed with gryphonne sepia. I then washed the sores with leviathan purple, and finally baal red. It needs a little tidying, but it's pretty much there, Next, the underbelly and boils. The boils will be highlighted from green up to yellow, then washed with sepia again, as I want them to stand out some.