Let's start with the obvious. That sky really hurts the photo, I would have eliminated it entirely, cropping down to the top of the falls, I know you would lose those nice trees, especially that flowering tree in the upper left, but that sky really overwhelms them from the get go. I also can see this in a square cropping. Crop it from the top of the falls down to where that rock in the water is, that would be one suggestion. One other thing I really feel needed correcting is panning the camera over more to the left, there is far too much of the rocks on the right side, plus it would eliminate that rock on the lower right, which doesn't really do anything for me. I know judging by some of the photos linked on your description you couldn't move to the left, put I would have panned the camera to the left a small amount.

You got a good exposure on the water, nothing looks hot there, but you did sacrifice some detail on shadows on the left side. It does look a little dark.

You usually have some really nice work, but this one just really doesn't strike me that much. Nice attempt though, you have shown some dedication with this shot, with all your rock crawling

This pictures is down right great!
First of all, i love the angle it was taken at! it really adds effect to the flowing of the water, and it shows each rock perfectly!
The lighting of the water is great, too! It looks very clean, and clear, but in a misty type way! It is as if it was boiling hot, and it makes me wonder if it actually was!
The darkness of the trees in the top left corner add a contrast between light and dark, and i think the sky fits, because of that spot of darkness. The one lone rock in the middle of the flowing water looks great! I know it wasn't completely intended to be that way, but it really does look nice! It makes the picture seem balanced, because it is in the center of the picture!
A very nice picture! Keep up the great work!!!