You might notice that I was inspired by Nancy D's bluebonnets and Deborah's wheel. The other seam comes from Carole Samples' book, p. 112, down the center part of the page. Of course, there are beads needed.
The stem stitch and French knots are both well represented in the bluebonnets, which are sort of influenced by the shape of yucca plants. But not in color. The motif on the bird fabric has a tiny center wheel stitch, so I got that in there afterall, with a very thin thread.