1. Find the image you want, make sure it's uploaded to somewhere like Photobucket or Tinypic.
2. Right click the image and choose "Copy image URL," or for some browsers, it's "Copy image Location"
3. Go to your profile and edit your signature.
4. Type
[img]
5. Then right click after that, and then click paste.
6.Type
[/img]
after the URL.
So you should have
[img]PASTED URL HERE[/img]
and then it should work. c: