The following keywords are used to help with the Pixel Joint search tool and to help search engines with appropriate key phrases. Make sure to take some time and add keywords to your pixel art submissions. It actually helps!
Chibi, Chibizar avatars, Chibizar icons, Chibizar pixel art, Chibizar forum avatars, Chibizar AOL Buddy Icons
I find it helps to make sure that the body is exactly (or as close as I can get to it) how I want it. Looking at the first doll with no clothes, his anatomy immediately seems strange and unnatural. I know it is supposed to be a chibi character, but even for a chibi his corresponding parts seem a little too deformed.
Try bringing the eyes in towards the middle of his face a little more. They appear as if they are almost on the side of his head, like a fish.
I'm not trying to rag on your piece, jsut trying to offer ups some helpful c&c