Can Someone Please Delete My Signature For Me And Tell Me How To Replace It With New Pictures?

I can't for the life of me figure out how to change my signature. I click on my username to go to my profile and then try to click on the banners in my signature but nothing happens when I click on them. I'd like to change to a new signature image. Any help is appreciated. Thanks.

 

Still can't work it out. I clicked on my username, clicked on Profile Page, then went to the "Information" tab on my profile. From there I can see where it says "Signature" but when I try to click on either the word "Signature" or the actual signature below it, I can't. Nothing happens. I even tried clicking around in all the empty white space around my signature and still nothing. I also don't see any kind of edit button.

I don't know if I'm on the wrong page or if my profile is having some kind of technical glitch but I see no edit button anywhere on the page and the only thing that happened when I clicked on the word signature was that it got highlighted.