Check out this older thread about Marina Sousa's blue ruffle cake - there are some techniques and photos that may be helpful.
Thank you so much! That is exactly what I needed. I did try searching the forums before I posted, but didn't find anything. Thanks again.
I made the cake you are talking about as practice (I actually loved how it worked out but forgot photos - it was a dummy cake ugh) and learned by watching youtube. Search fondant ruffles.
Long story short: use a donut cutter to cut circular pieces, place on shaping foam, twirl a cocktail stick over it. It's quite time consuming and painful on your thumb (lol) but worth it. Tip: make sure to place ruffles close together as it will look off otherwise.