I always make bias binding 2.5 inches wide; fold and press before stitching to the quilt sandwich. I then attach it to the front of the quilt sandwich while the sandwich is still on the quilting frame (Gammill set up). After I remove the quilt from the frame, I trim the batting and backing 1/4 inch from the quilt edge, turn the binding to the back and hand stitch down with the binding just covering the line of stitching that attached it.