I would suggest using a smaller and more saturated palette and getting rid of the dither-overkill.
Forms and colors look smudged and washed out as it is.
Yeah, some of the dithering on the trees and in the middle of the waterfall seems unnecessary. The darker outlines on the boulders stick out too much. Overall, this piece has good composition, and I think the pallete you chose was a good idea. Good stuff.
Dithering seems to be a little too much but otherwise a really nice image.
Thanks for the tip!