Roll out fondant 1/8 in. thick on your Roll & Cut Mat sprinkled with cornstarch. Cut the desired size piece using the straight-edge wheel of the Cutter/Embosser. (You may also create the quilted effect directly on your fondant-covered cake.) Lightly roll the Cutter/Embosser wheel over your cut piece to create diagonal lines. Use a small ruler and a straight edge to guide your wheel to space the lines evenly.