Try googling snail trail judy martin. One of the images that comes up is the quilt titled "Shakespeare In The Park." I worked on a raffle quilt that used this pattern, and keep saying I will make the whole quilt for me someday. My somedays keep getting longer and longer and farther away. Since I was working on parts of the larger whole, I could see where the parts come together to make the whole. I did some of the small inner stars and a few of the tail of the snail, where I was surprised to learn that the curve is made with squares and rectangles.
Jenny Doan's work usually grabs me and holds on, but I looked at the email that came out from MSQC this AM, and did not like what looked like ragged curves to me. Sometimes, re-inventing the wheel gives you square edges.