I use a 2 1/2 inch strip folded in half for my binding. Before I apply the binding I stitch around the edge of the quilt very close to the edge of the quilt top. I then cut off any excess batting and backing. I use a walking foot and use the edge of the walking foot as my guide line which give me a 3/8" seam. I join all the binding pieces together using a miter join. I sew the binding on the front of the quilt stopping 3/8" from each corner, fold the binding like you do for a miter. The trick to a good miter corner on the binding is to stop the distance of your seam allowance. If you are using a 1/4" seam allowance you would then stop 1/4" away. I join the two ends of the binding again using a miter. There are several ways to do this so choose the one easiest for you. I use a thin stream of glue along the top edge of the back and roll my binding over. I either secure it with some pins until the glue dries or iron it to dry the glue. I don't like the folded edge of my binding to be ironed so avoid that. By not ironing this edge it is easier to hide my stitches when I hand sew the binding onto the back. The binding on the front is narrower than the binding on the back. I use a very small (thin) needle to hand sew the binding on the back and you can't even see the stitches.