The 5 1/4 inch squares are for the hour glass pieces. Usually you would place these right sides together and draw a line diagonally. Sew 1/4 in on each side of the line and cut down the middle. Rotate these so the colors are oposing and draw a line down the center and sew same as first time. When you cut these you should have your hour glass pieces for the stars at 4 1/2 inches. Try a test with some scrap fabric first to make sure it works out for you. I tend to over cut slightly and trim them down to get the perfect size needed.