Signature and handwriting are two different thingx. People aren't supposed to be able to duplicate your signature.
Were you taught penmanship (and marked on it) in school? If not, did you work on it independantly?
Remember the olden days of traveler's cheques? You had to sign them all at once. The first had your signature, the next few were pretty good...then it started looking like the path that a bouncing ball might take.My handwriting is so bad that even I can't duplicate my signature! I bought a new truck this weekend and was just laughing at how different my scribbles looked on each of the 2000 pages they make you sign!
Srsly. It's not fairMy handwriting looks like Chernobyl happened in my pen
As for my signature, well, it's not unakin to the thing that a spider does when it sneezes.