Hiya. Here's a very basic idea of how to make an avatar:
1. Open a paint program such as Paint, GIMP, Photoshop, or Photofiltre.
2. Make is so the canvas (the part you draw on) is 80x80 pixels.
3. Draw / paste your design onto it.
4. Save it.
5. Go to an image host like
Tinypic or
Photobucket. Upload it.
6. Go
here and paste in the URL of your avatar. Click submit.
Alternatively, you can go
here to request an avatar & signature set from one of our very talented graphics artists, or
here to read about tutorials and tricks for various art programs to make your own designs better
Hope this helps!