[Oxy-Moron]

I'm sure you know about the obvious error in the river, so I'll ignore that :x The mouth of the waterfall is FAR too small. Unless you design your own graphics for the waterfall, you should also have deeper (not deepest) water leading into it, otherwise the color scheme simply doesn't match up, to me at least. Also, the river should have a bit more activity (tiling, etc) in it... give it the appearance of a river flow. Just open things up a bit more and throw a bit more creativity into it.