Digital painting

I have been going back to doing some digital painting, something that I would like to become better at. Drawing on paper is easy enough, drawing on computer is slightly different. One thing that i wouldn't mind doing would be concept art but that's for later here something I'm working on at the moment. Doesn't take too much of a guess to work out who it is, unless you haven't seen the show in which case...shame on you...

Finished... I haven't put all the detail of his clothes in, was a lot of it, but looks good enough, the face is all that matters hehe