My ds4 (at the time) made these at christmas time for favors at preschool. They were a huge hit! We used star and tree shapes. I wish I had thought to take pics Yours turned out SOOOO very nice.
Great job! I too am in love with shirring. I have found that the results you get from steaming after you finish your garmet depends on the fabric itself. And maybe even the tension of your elastic thread.