Well, the render looks a bit weird, what is that under his left eye? My favorites here are the first and the last version, nice flow, nice smudging!
Looks like floating head syndrome to me, hun. = / You need to show more of a person, but if you don't, and it's just a head, then don't put it right in the middle. Also, try to create more flow. Right now, my eyes don't know where to go. >.< Haha. You'll get it though. ^_^