How to Paint mountains, water, and clouds in Photoshop

Want to draw a quick scene in Photoshop that contains mountains, clouds and water. Just watch this video. You start with a rough sketch of the mountains and other elements of the scene using a round brushes of varying sizes. The presenter stresses on keeping in mind, the lighting and depth perception of the overall picture while painting. The next step consist of adding shadows and providing soft and/or hard borders to demarcate the elements. Finally the finishing strokes consist of adding details to the various elements like dark strokes to denote plant growth on the mountains and bright strokes to denote the crest of the waves in the water.