I have pictures showing how to do more than one border at a time. The other example would be on a rectangle and there are two ways. Cut all four of the borders the length for the long sides, and sew a seam in the center of the borders of the two short sides to make them the 1/2" less than the width measurement. that leaves the corners still matching. The other method would be to cut all four the length of the shorter sides and add a section in the middle of each longer side. Not a clear explanation but you need to try a square first, then please ask me questions. This is the first time I've tried to do this with just pictures and captions.