The waterfall and comp are great. Love the ss and all. However, the processing seems to need a lot of work. The image seems very gray, where as the water should be close to white. So levels adjustments. Also the green seems brown/yellow which can be easily correct too. Rock that out and you'll have a really killer shot. Great work on the comp
The colors look warm and vivid on my monitor. The moss colors looks the same as the moss around here, so it looks natural to me. The only thing I would change would be to make it a touch lighter overall. Great shot with glimpses of the water all the way to the top so you get a feel for the landscape.
Ah, i forget not everything is as green as over here :-P Looking back I think just dodging the water to make it pop would be enough and had that extra kick. Not sure how much you normally dodge/burn etc. You mentioned warm...and I think that's what it is, might just need to cool off the white balance a tad. Not saying you should just worth poking around and seeing what it looks like. Great falls and shot still