This is stupid, but I need help

How do you add a signature to your profile?  I see everyone else's and they all look so cute and I want to add one myself and for the life of me I cannot figure it out.  If anyone could guide me in the right direction, I'd appreciate it.

Click on "User settings" to the left of this message board and scroll down just a little and you'll see a place to put your signature.  Good Luck Doris