I machine sew most of my bindings. I bow to those who hand sew theirs, I do not have the patience! I sew the binding on the back and machine stitch from the front. The trick is to be very careful with the turning and pinning so you know they match perfectly. I often use some form of decorative stitch. One a child's quilt, I may just use a zigzag. Sometimes I use a tight blanket stitch but most of the time I find a decorative stitch that matches to top. This can hide a 'shaky' spot. All my imperfections shine huge when I use a straight stitch to machine bind a quilt!