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!
Penguin Awsome, Penguin avatars, Penguin icons, Penguin pixel art, Penguin forum avatars, Penguin AOL Buddy Icons
Be patient. Not all peices get comments quickly.
Many crits: For one, you don't have to dither so much. Seriously, just cell shade. Two: a lot of wasted colors, like the blue in the eye and the various oranges in the beak. Use these "extra" colors to AA or simply get rid of them. You really shouldn't outline things on the inside, like your penguins belly.
But, a nice start ;)