Dorothy, I'm about to leave for work (at my LQS! ). Will get some photos of the penny mats up later.
Basically, I drop the feed dogs, set all the dials to 0 and let 'er rip! I use the Machingers gloves and a large table for support. It takes alot of practice; I started out with small projects and things I didn't mind messing up on. The largest project I've done so far is a queen size quilt.