I have a sheet of craft foam from the dollar store (the stuff is either in sheets or cut into shapes). I cut a nice straight edge piece with my rotary cutter and ruler and tape it to my machine with painter's tape. It makes a little "wall" to keep the edge of your fabric in place. Like Jan has a pic of in her post. Just instead of a pad of sticky notes, I use that craft foam instead. It's cheap, I can replace it easily, it's flexible and I can cut it to any size I want.