So after you fill the template out, you scan it in to your computer, and upload it to yourfonts. Give it some time (on average it took my fonts about 1-2 minutes to be created) and you have your own personal font, of your handwriting! Another thing you can do, if you have a tablet, like a Wacom, you can load the template in Gimp, Photoshop, or another image editing software, and write the letters directly on to the template. It's important that if you use a pencil, to make your lines dark. I recommend using a dark pen (like a Sharpie) so that the lines are dark enough and you can insure a quality copy. Before going ahead and making the fonts, I recommend reading all the info on the website, so your font can come out as nice as possible.
Here is an example of my template that I uploaded to the website.

Click HERE if you would like to download my font, I created, so you can get a good idea of what this website does, before you go ahead and create your own font. Here is a sample of my font.

Have fun with this site!