Binding:
Cut strips 2.5 inches wide for a doubled binding that finishes .5 inches wide on both sides. Piece the entire length figuring about 10 inches extra in length after adding the 4 sides together. This will allow ample to turn corners, mitered also. Once seamed together (I don't mess with making mitered seams, sewing straight seams works just fine--but press the seams open.) press it in half, right sides together.
Fan-fold the entire length. Seal a #10 (business size) envelope and cut off both ends. This makes the binding "holder." Place the fan-folded binding into the "holder." Hold the envelope together with a rubber band, just tight enough so that the binding doesn't fall out. Pull the binding out as you need more length. This give you a neat way to control the binding and not have it get all over.
Sandy