I can see you don't have many pictures with ponies. It's fairly obvious that you know how to paint, how the image in your head is supposed to look on a canvas. The background, light and shadow, facial expression etc looks really good. So the only thing that is not great (imho) is the thing you're probably not used to. Pony anatomy, limbs, to be more specific. It's kinda awkward because ponies are not animals people usually paint (outside of the FiM fandom) and so they do it as they think it should be or use refference of something they've got at home - a cat. Over the internet is thousands of pictures of MLP pictures where ponies look more like cats because of using different proportions, slimmer and taller limbs and ribcage 'n stuff.Just wanted to point out. Good pic, anyway