For anyone intereted in creating a free custom avatar (similar to the one I'm using here), I created mine at www.faceyourmanga.com. Once at the main site, click on the "British" flag for the English page, then click on "Face Your Manga" to create one. You can customize the face shape and skin color, facial features (eyes, nose, mouth, eyebrows, facial hair, lines/freckles), hair style and color, clothing style and color, accessories like glasses, backgrounds, etc.
It is very easy, you do not need to create an account, download any software or anything. When you are done, you enter your e-mail address and your avatar is sent to you in an e-mail link, then you can save it and use it for whatever application you want. You may need to edit it down to a smaller (64x64) size for use on C4L.