I like your drawing style\

Wow... I didn't expected to find good drawers here, I gess I was wrong. Your drawings are very good and your shading is almost perfect.

Wow you have some madddd skillz those drawings are realli good
good job and keep it up

Nice work..though you need to improve those faces but for both the hair and the body they are really good..

It's nice, man!! awsome!!
keep it up! ^_^

I like the one you drew of the full-size chibi :P the position is cute and the body proportions are nice... the thing to work on here is that the face seems a little small compared to the body... and maybe work on more gradients on shading, that would REALLY make it pop out more and give it some more definition ((and sense of 3-d))! ^_^

as for the 2 old ones.. the first's arms are much too short ((think of your own arm.. mine comes almost to my knee and yours seems to come right to the crotch)) but i must like her expression and pose ^_^ the second one here doesn't look like you put in as much work, the proportions are very off >.<

a tip that i do that might help you on proportions that i tend to do TOO much is
A) find a pose in a picture you find online or something as reference
B) take a pic of yourself in that pose, and then translate it into a drawing! ((i use this one a lot :P sometimes i look very dumb, but my pic will turn out awesome in the end LOL)) and then i don't have to search for a matching pose

I like the third one the best... you make the girl really attractive. =]