I really like the way the third image came out! Lovely-looking eyes and the sideways pose of the head also came out nicely. Definitely my favorite of the bunch. :D
I can't help but feel a little distracted by all the folds, though. It seems like you added an excessive amount of them; so much that the clothes she's wearing look a bit wet. There's a
really nice tutorial I've been using lately for folds, so I'll drop it off here and hopefully it helps you out a bit next time! Also,
this tutorial is pretty helpful, too.
I really like your work and it's great to see more pencil art popping up. ^_^ Maybe next time you can draw a full-body human, I'd be interested in seeing more of those from you!