These are really nice figure drawings you have done. You seem to have a strong grasp of all the basics. My only crit right now of them would be to watch the anatomy in the neck areas. On many of these figures, it is not as convincing as the rest of the structure.
Keep up the good work.
Oh, and one other thing...you might want to consider ditching the art-censoring nazis at photobucket and just uploading your pics directly here. Several of your images have apparantly violated their moronic "terms of service."
As the ego shrinks, so the spirit expands.