Another option, provided you don't have a computerized sewing machine, is there is a magnetic guide that you can place on the bed of your machine. It's about 3/8 in. tall and it provides the same edge to line up that some of the 1/4 in. feet do but at a much cheaper price. Joann's has them for about $5 I think. If you have a computerized machine do not use this as magnets and computers do not play nicely together. Anything that has enough of a lip that you can help to guide your fabric will work. And as Holice says, putting a piece of tape further forward on the bed of your machine will help as well.