Another method of stretching the backing is to put two "church" tables together to form a large square. Then put your backing fabric down and stretch it, using large "bull dog clips", (bought at the office supply store) to secure the backing every 12 inches or so. When the backing is taut and even, lay the batting down on it and smooth it out. Then lay the quilt on and smooth it out and stretch it taut if it is large enough to reach the edge of the tables. Pin every 4 to 5 inches. If you wish, use the basting spray to hold batting and top in place.