Click on your user name in the upper right corner of this screen (under Signed in as UserName). You may have to scroll to the top of the screen to see it. This will bring up your profile settings, and you can click on the Avatar tab there to upload an avatar.
Currently, avatars are limited to a maximum size of 100 x 100 pixels. This fits the spot on each forum post just about perfectly. I recommend using the following formats for avatars, in this order: .png, .jpg or .gif. The .png format has the color depth of .jpg and some compression but without being lossy. (I do not recommend setting a transparency color when saving in .png or .gif formats, you will not like the results when uploaded.) All modern browsers support .png as well as many older ones. Be sure to trim away unnecessary white space from your avatar. I uploaded Allyrianna’s avatar as an example, trimming a bit of the hair in the lower right and most of the empty space.
Once an avatar is uploaded, I have to go in and approve it. It took a bit to find both places I had to do that, even for my own avatar, which a scan of the Feature Creep from Dilbert—appropriate, given the tendency for the Yön Worldbook to get bigger and bigger.
“You are an artist,” Yeste said.
“No. Not yet. A craftsman only. But I dream to be an artist.”
—Domingo Montoya,
The Princess Bride, William Goldman