I like that you've managed to get a green background and it's blurred out very nicely. The DoF is perfect with good detail on the bark, and the diagonals are very strong.
The only thing I don't like is the out of focus part on the left hand side - if I cover it with my hand I see a much better, cleaner shot.
A good photo, and I do like it.
I tried to photograph moss on bark yesterday with no luck whatsoever, I think I would have liked more DOF in the front so that I could actually see the detail of the large, orange thing. But I like the DOF as far as the nice detail on top and the nice soft background. You added a lot of interest to the composition by cropping at this angle, nice detail.
I like the colors and the composition, but, for me, the dof is detimental to this shot. There is a narrow band of the photo running from the top left to the lower right that is in focus and the rest of it is just blurry.
Composition is pretty good
Meets Challenge
Visual impact is good, good focus at top, but fades as it nears the bottom
Originality is nice, good idea
Colours looks nice