I added a slim belt at the waist to give it further definition and make the ruffle even more pronounced. (pennypincherfashion.com)
If you want a complex pattern on your curtain you can make ruffles with various fabrics and arrange them on your curtain based on the darkness of shades. (designtrends.com)
You may want to make your ruffles less wide than the ruffles for the larger cake. (brighteyedbaker.com)