Portrait Study

Hello this is my first attempt to make a "realistic portrait".Everything done from scratch.Sculpted in zbrush,texture projection in mudbox,retopology in 3dcoat,unwrap in unfold 3d,shading lighting in vray for maya,Compositing in Nuke...Displacement map and Albido projected in mudbox using texturing xyz maps which are awesome.I had a painful experience but it really worth it.I had learned a lot out of it...It was really fun to do this one.Still keen desired to do another one...Hope you all like it...Please let me know your comments...