It's been a while since I last draw portraits....back in 2005, actually

Any way, I got bored one day and decided to draw portraits again and Mr. Julius Caesar seemed like a fine candidate, or at least his bust is. My....5th or 6th attempt at portraits...
This is the result:
Note the actual drawing is a bit darker than this and way less grainy.

Model picture:
Now this one is a little different. I chose him, or his bust, because it has really defined facial features that's really helpful with the drawing. Plus his eyes are easier to draw

It's mostly done as far as I'm concerned. I'm leaving the hair alone because I have no idea how to draw/shade statue hair so if any one have any suggestions on that, I would appreciate it very much.
Comments and (harsh) criticisms are welcomed as usual.