Clearly, he isn't following a specific style reference, so I think we can forget about style and build off from what he has here.
![[Image: 2UuodID.png]](http://i.imgur.com/2UuodID.png)
I cleaned it up a little for you, using your latest revision as reference. I reoriented the lightsource (as you can see, you had a lot of conflicting lightsources there), and threw a couple of suggestions on how to shade the jacket (I think I'd pick the 3rd one, myself.)
Since black (or black-like colors) is a very dark color, you don't need as many shades as you would with other parts.
I cleaned it up a little for you, using your latest revision as reference. I reoriented the lightsource (as you can see, you had a lot of conflicting lightsources there), and threw a couple of suggestions on how to shade the jacket (I think I'd pick the 3rd one, myself.)
Since black (or black-like colors) is a very dark color, you don't need as many shades as you would with other parts.