The wizard in blue and bone is a GW khemri priest (human sized) I believe, and the face can also be painted flesh (I just felt that a gold death mask was better suited as it is intended to be a liche priest)... No idea how you can get a hold of him though. I got him and several others from GW when my store was doing painting lessons.
The cape is not very difficult. Several watered down layers of Kommando Khaki (KK) as a base coat. Once you have an even coat mix 50/50 Kommando Khaki and Bleached Bone. water it down enough to make it transparent (this takes a little practice to get right, I only use water but I\'m sure other fancier products could be added as well). Apply this as the first set of highlights, you wont notice it at first as its mostly transparent, but after several layers it starts to really show up (and you get fairly smooth transitions without having to \"blend\" paints). Do this to brighten about 80% of the material that you want to be highlighted. Ater that take pure Bleached Bone, water it down as you did the mix before (so its transparent), and apply it the same way as before, this time try to cover about 60% of the previously highlighted area (and dont worry about going over as the paint wont really show if its just one layer). If you feel like adding more mix 80/20 Bleach Bone and Skull white and water down as before, this should only be used in small doses, only one edges and highest points. It may sound overly complicated but the technique is really quite simple when you get the hang of it. I hope that made sense, if you have more questions feel free to ask. The darkest shadows are somewhat from my lighting not from the painting but if you were to work up from a Graveyard Earth base coat it would probably work well to deepen the shadows (you could also back shade from Kommando Khaki with Graveyard Earth if you prefer that)