I make mostly charity quilts, so I usually just fold the back to the front. The nice thing about doing it this way is that you don't have to worry about whether you are catching your decorative stitching in the foldover. I cut the excess fabric so I have one inch, fold that in half, then I miter the corners by machine stitching that corner. I have one of those cool green miter templates that works well for me. After I have stitched the miter, I trim, turn it and press a nice half inch fold all around. If you press it well, you don't need pins or a glue stick. I also think it is very important to use a walking foot. The stitch I use most of the time is the blanket stitch, and try to have the thread match as closely as possible to the front and back fabrics. This makes the stitching almost invisible.