Bill, a nice fine and capture, and the frost is a nice addition. I like the composition and selective focus. The back lighting really makes this shot even better. When I enlarged it the background seems to show some noise. Not sure if you ran any kind of noise reduction in your post processing, but if not, that might could help the over all quality of the image. A nice capture as presented, in my opinion.
Bill, this is nicely frosty, looking very good as presented. If you’re so inclined, I could see two possible changes; first a bit of (or a bit more) burning along the left edge to darken the whites , second, a bit of dodging at the base of the seed head to show a tiny bit more detail. (I like having to look carefully but that area looks mostly black on my screen.)
Mark, Thanks for your feedback. Much appreciated. As I get this kind critique, I find myself going back over past images with a fresh look. Thanks. Bill