This is a sketch i made in ZBrush in about 4 hours today. Hope you enjoy.
Also here is some of the work in progress.
(tip: have real anatomy reference available during modeling so can help with proportions example: Eliot Goldfinger's Human Anatomy for Artists was very helpful as I was making this sketch. I also found it lots of fun improvising on the clothing... example for the face, shirt and coloring i basically just had an idea and went with it. )