I don't have this ruler, but after looking at Iceblossoms' link, I may have come up with a solution to shorter petals. You would have to test my idea on scraps. After cutting strips a shorter width, line up the pointed end with the edge of fabric and cut petals. Then bring down the top of the curved edge of ruler to the other edge of fabric. This would mean moving the ruler to cut the other side of the curved shape. Clear as mud? Perhaps this pic will help.