beautiful but somewhat overexposed waterfall. To avoid this lower the exposure time. This of course creates not a so softy water, so probalby you'll need a ND filter with higher grade.
Good choice of shutter speed to give this a cool, flowing effect. One bit of a suggestion is to place the waterfall more to the right or left of the frame in order to compose it. This would call for a reshoot of the area, but would also improve the image tremendously.
I cant point out what I don't like about this picture. It just doesn't have a WOW factor.. Maybe it is because of all the autumn colors in this challenge... Or maybe I have seen to many waterfall pictures and got spoiled....