Greetings Tisha!
You need to either use your own or someone elses artistic abilities to create one [:)] Otherwise, you might find one suitable on the Internet if you do a search for Avatars.
Please note that an Avatar should be 62x62 pixels, or as close to it as possible - certainly no larger. Once you have your Avatar, you can upload it directly from your profile where it comes to me for validation. After validation, you can activate it from your profile.
Happy Avatar'ing! [:D]
With best regards,
Adrian.
So, where do the cool thumbnails come from? I wanna avatar too.