Someone complained about avatar size limits. Sorry, they're there for a reason.
Bothan Spy Avatars:
There's a 1 pixel think black border all the way around w/ a 45 degree cut in the 2 corners. Saving them as a gif gets you the transparency (note: you want to make sure that the black border is solid, not blurry). You position your image and remove the excess that isn't within the border and then apply a slight emboss/bevel effect.
Animation is done w/ Imageready (for me) and is a more difficult thing to explain.
If you wanted to make your avatar look exactly the same as the ones I made, then just save the image to your computer and open it up in Photoshop (or whatever you're using). You can then delete everything out of the image but the border, put your avatar image on a different layer and then you're good to go. All you'd need to do is cut out the rest of the image that doesn't fit in the border and apply the effect.
Once you get the hang of it, it's not that hard.
:rock: