Very nice stuff. :3
Only a few things stick out to me... let's see...
I think your lineart could be a bit smoother and crisp. Just working on that area a bit will improve your art loads.
biggrin Your CGing already looks fantastic.
Another thing you could play around with are backgrounds... I only see 1 or 2 backgrounds in all of your pictures.
I find that
these kind of backgrounds actually take away from the picture itself because they look so... lazily done. I dunno. :s Creating a simple hand-drawn background would be a lot more impressive. Like, for that picture I linked to above, you could have her sitting on a sidewalk with a chain-link fence behind her or something. Just a suggestion. x3