Purpur

Whoa... That's awesome! I love the mountains fantasy style look, and the sky is amazing! Those rune-like markings are a great touch. But if you'd like some constructive critisism, I think the water could use a little work. You have the right idea, but I think smaller strokes would look more realistic. The big brushes are a bit too obvious, but everything else is seriously incredible. Well done, and good luck on your exam!