Signature guide
It all depends on what you've got.
Load up your image program of choice. For me it's ye-olde-photoshoop.
Googled some images. Tried to find something I'd like to make a signature out of. Really it could be anything.
Made a new document with the right proportions.
Decided in the end to go with a nice image of Jetstream Sam. Magic-ed out the background in photoshop.
Added a background and a couple more google images. Used layer effects to blend them in a bit
Color theory that stuff, blend it, add your name, and you've got a signature.