Here you can request:
Signatures - require 20 messages on our forum per signature
Avatars - require 15 messages on our forum per avatar
Userbars - require 25 messages on our forum per userbar
Wallpapers - require 50 messages on our forum per wallpaper

If you want to submit a request you need to post some informations:
Text:
Colors:
Animated: Yes/No
Theme:
Dimensions:
and some more if you want!

Administrators,VIP Members and Hall of Fame members didn't need messages on forum!

Standard Dimensions
*Avatar - 150 x 150
*Signature - 400 x 100
*Userbar - 350 x 19
*Wallpaper - 1024 x 768

This list is if you want standard dimension.