I machine sew mine. I press a 2.5" strip in half lengthwise and then sew it on the front of my quilt, mitering the corners. Then I take the time to turn it and (from the front) pin in the ditch, checking every few pins that I'm catching enough of the binding on the back. I use a lot of pins and pin close. Then, I can sew in the ditch from the top side, removing about two pins at a time as I work around. When I'm done I look to see if my stitching missed any of the binding edge and fix those spots if it did. With good pinning that doesn't usually happen.