That's a really nice try Bones, mate.
Although i think Daemon might've been a bit unforgiving there () I'd say the one thing that he pointed out that needs serious thought is the part he's labeled "unrealistic" or just below it, where the bottom of the waterfall flows up into the pool? Water can't flow up! The way the rocks are done is okay, it's kind of understandable, it's just how the water flows up there that's bugging me.

Again, just like to re-iterate: Really nice.