I love HDR's, I don't know if this is how this was processed, but it's similar if anything. I'm a photographer and love images like this, I do a lot of them. If I was to compliment and critique this image, this is what I would say:
1. I like how it's framed to some extent. it could use the main subject (3 water falls) to be a little more offset and not centered so much. Maybe a little cropping.
2. Main waterfall if blown out. The large waterfall is the main subject and the first thing that catches the eye. Work on that more and bring some detail into it. It looks from the unedited version that this waterfall isn't blown out (or overexposed with no detail-too bright) but the processing over exposed it to where it has no depth.
3. The right side at the bottom of the frame has a great look to it. Beautiful green grass with lot of depth. The rest of the image needs more of this.
4. I love HDR's that has a magical almost mystical look to it. I would. I would work some more on the trees. If you can't cool down the large waterfall, then bring the trees more to the focus and make them stand out more.
Is this image HDRed using multiple images? I would love to have a go at processing this image if you are willing. This image has a lot of beauty in it.