You got much more work on the water. When have you ever seen a water falls with no mist? Add so mist. You might really want to look at you tree scales. Do you know what I mean whan I say 2 point perspective? It's the effect of say railway tracks converging in the distance. It's a system of drawing too. Your trees violate those rules. trees futhest away should be smallest and tress closest should be largest to make it look proper. One of your trees is grown in the water. Not very likely.