I really like the way you draw Luna's hair and wings. They look like real brush strokes. However... her positioning is very awkward. Her back leg looks a disjointed. Now, I'm not saying I could do better, but I think you could fix up a couple things. Don't mean to sound too demanding.
Yeah, her back legs are supposed to be tucked under her. Almost like she's kneeling I guess. In the pencil sketch the position was better defined, but still incorrect (which is why they're still wrong... haa). Need to do some more studies of horse legs.
pleasepleasepleasepleasepleasepleasepleasepleasepleasepleasepleasepleasepleasepleasepleasePLEASE make this a print Would loke to have a nice big poster like this up in my room. Love it even without those missing legs, it looks wonderful