This detail shot shows the use of hemostats to pinch and hold the center. I bought several sizes at Harbor Freight fairly cheaply, they carry four sizes.
I'm sort of in love with making these. I counted them up this weekend when I was taking pictures of them, and I have about 100. OMG. Yes that's correct, I have over 100 of these babies. Not all are keepers for sure, the ones I did at the beginning were real experiments. But now I'm considering how some of the "rejects" might be cut up for quilting or other art projects. SO FUN.