These are my first zinnias. It was interesting to work on the layers. I made petal canes that I left in 3 sizes. Then I started in the middle and built the flowers in both directions. I really didn't know how large they would need to be to look "complete", so I started with a medium circle of petals, and lay progressively smaller petals, working toward the center. Then I added larger petals along the bottom until I was satisfied with the shape and size.
In looking at photos of real zinnias, I was intrigued at the various different little petals that circle the center. I chose the little swirled pre-petals to use in these samples. They show up especially well on the red and white zinnia.