You can create a font in your own handwriting~for free!
Go to http://www.yourfonts.com/ and it will lead you right through it. You'll need a printer and a scanner. The thing that took the longest was filling out the template~I was trying to get it perfect and spent forever. I added some little symbols on the bottom too.
How fun to be able to use your own handwriting on the computer for scrapbooking, address labels, little notes, lists, letters...the possibilities!
And look at the bottom of the post~there is my name in my own handwriting!
To add your signature to your blog, you'll have to use your new font to write your signature in a photo editing program, then host it on a site like photobucket.com or flickr.
Then, follow the instructions on this little tutorial here.