In the class I just took I used a Layer Cake and two Charm Packets, along with 3 yards of solid colored backing (some used flannel, minky, etc). Used the charm packets to make a 4 patch square (using 1/2" seam allowance, square will be 9"). Trimmed layer cakes to 9" squares. Batting is cut to 8" squares. Start sewing, alternating layer cake square, then the 4 patch square, again using 1/2" seam allowance. Mine came to 6 squares across and 7 squares down. Easy and oh so cute!