To properly critique the artwork, I'm not really that familiar with the cellular shading style.
I have to say for the most part, the anatomy of the drawings are pretty good. Though I would be a little careful with some things. Looking at the hand of the Veronica picture in particular. The one in front looks large and a little awkward.
The light source also doesn't seem to be as well defined in the drawings as it should, though it might just be some unknown style I don't know of. But I might also suggest adding in more colors and variety to the overall drawings.
And also I might suggest trying different things with you're backgrounds and poses to leave more of an impact towards the viewers. You don't really have to leave the genre you're drawing, but try different things to find a sense of style somewhere.
I agree with TheLeetCasualGamer about the light source, it's not defined well in the drawings. The light source should be easy to find. Also, playing around with colors and layer settings never hurt. Experimenting with colors and shading is fun to try and it helps improve your skills.
Okay, the anatomy seems alright. The heads are a bit big, but that can change soon. I have point out that the eyes are never the same size. O..o Well, the last picture seems to have the same shape and size of the eyes. Whether the head is tilted or not, the eyes should have somewhat the same size and position. Usually the placement of the eyes can be determined in your sketch because there's guidelines on the face to place facial parts on.
Overall, you make some nice drawings and I hope you found my post useful to you!