This is a difficult image for me to Critique mainly because I like it and can't honestly find much to improve upon.
Lets start at the top, the tree framing the top left is very nice but maybe the cloud on the right could be more white? I like the snowbound trees in the mid ground and they add depth to the image but think I'd like to see more focus/sharpness in the small falls as (for me) they should be the center point of the image.
The snow in the midground has a great exposure and with some lovely shadows. The foreground water works well in this image for me and not overly blurred (something I tend to do).
I think the overall exposure is spot on but sat here with my 2 pieces of cardboard I'm wondering if cropping out most of the sky would have helped your score (though losing the framing branches).
Free studies can be tough but I do think 5.7 is underscored, I didn't vote in this challenge but would have gone with a 7.
That looks really cold but worth it to get a photograph like this. I like that you have created the motion blur in the water without making the water look like a mist
A very scenic place to be. This photograph makes me want to visit. It's calming in its nature. And the hint of sunlight spread here and there add interest. Very nice shot.