Ap Wizard that is very nice work
The artist has used a Poser figure.As far as the cloth top goes break it down into tones ie shadows,midtones,highlights etc and you will see it may not be as hard to reproduce as you think
The tricky part will be blending tones
I remember when I used to draw portraits that the initial lines and thumbnail sketch always looked very unimpressive,and even so when I had a rough degree of shading applied.But when I finished smudging and highlighting etc the image would come alive,and people would look at the finsihed image and go WOW that looks really amazing,but they would not have if they had seen the initial thumbnail and rough shading
......do you get what I am saying
Stu.