I made this once before, but I have no idea what happened to that thread because I can't seem to be able to find it.
Basically, make an avatar for the last person who posted an avatar. Make one that suits them or their username. It doesn't have to be graphically good or anything.

Include these in the avatar:
-An image. Made yourself or from the internet, it doesn't matter.
-The person's username.
-A word or two describing the user, like a subtitle or subname. (optional)
Note: The maximum size of your custom image is 185 by 185 pixels or 95.7 KB (whichever is smaller).

example:

lol I've got the crappiest one yet :P

I edited it

I love your threads N0.

EDIT: Biscuit has been faster than me. I'll edit my post when I'll be done making an other pic.
Also good luck to the one who'll make mine.

EDIT2:

Notbad.