No no not the ADD screans , the load screans while you are zoning :P But ya, good idea to make class oriented pictures! i'll keep that in mind.
as for adding a picture to a signature, if you would like i could make you a signature. What server do you play on? I can make a temperary character on that server to get some screan shots of you . or if you have some ( with the UI turned off please) you can send them to me :P just tell me what you want it to say and evil/good ect.