You're supposed to give CNC. I love all of the first row going across, especially the Sho one. No complaints there. First one in the second row is cute xD I like the second one but it's a little too sharpened, and I like the colors in the third one O: First one in the third row I like, the contrast with the red and the green surprisingly looks pretty good. I don't really like the second one since I can't tell what it's of xD; it looks way too sharpened, I'd tone it down next time. And I love the last one, now with the contrast of red and blue instead of green and red looks even better. Good job on these, overall I think they're quite good O:
Like Xaale said, a few are oversharpened. I also think that whatever it is you're doing, several of them are coming out MUCH too contrasted. That can be an easy fix though. :] Keep it up.