The waterfall is very simple; just two cloud layers blended by simple shapes, where the 'water' is small scale, stretched Y-wise and not too high quality, and the mist at the bottom is blended by a slightly larger simple shape (or an adjusted one) and some perlin cloud until a certain height. The same simple shape is also used to redirect the rock wall slightly inwards, and color it in 'watercolors', surface shader set at coverage 50%. Although the latter effect is barely visible.
