Re the waterfall shape, I should have mentioned earlier I'm restricted to straight lines as the cliffs tile vertically as below (hence the weird blocky shapes of the rocks).
also a bit of a colour edit trying to add a bit of flavour and keeping comments from u guys in mind.
not sure if grass is a little TOO desaturated now, it looks OK in Photoshop but on here it looks off.
man i really hate the bright background on this forum it really throws off the colour balance