Very nice. I love the wind in her hair. You're getting a lot better at seascapes, too. ^_^ The cliff is very well done!
I have a couple of critiques, though.
1. With a sunset that brilliant, the light would colour the pony orange around the edges. You have to be careful not to overdo it, though.
2. When using the grass brush like you did, it's good to use a smaller brush size the farther away the grass is, like you did for the second patch of land. But with the closer one, you would need to gradually get larger. And, it's best to work from the back to front (top to bottom), so that there aren't random stray blades sitting "on top" of the others.