Oh Karen! This is one of my favorites of yours. Absolutely exquisite! I love this type of photography. It kind of reminds me of Jutilda's style, which I LOVE!
I think the centering of the tree works well here. The focal point of the tree and leaves lends a nice sense of reality to an otherwise abstract image. It emerges nicely out of the surrounding blur.
This is a beautiful blend of colours, and the central tree is just sharp enough to stand outeffectively without taking away from the soft abstract design.
This is strange. It's a sweet stripe, rather than sweet spot. Reminds me of the aftermath of a bush fire. Have you seen Sue Robertson's Fire Tree portfolio? I think it's very much like your own work. She has your eye. Or you have hers. One of those.