Thanks PG. I'll consider the desert and the clouds. I'm really not liking the little amount of dust my horses are kicking up.
Walli - Thanks for your comments. I was trying to give a sense of perspective with the trees and horses in the foreground. But, I can see where it's not convincing. Maybe if I made the horses smaller and more compact. The trees look flat, but I think that might be due to my lighting (a light behind the camera).