this is really amazing. Keep it up, It's lovely! I love how she just looks calm as she jumps/run through the grass, How you drew her like it was a hand painting, I love this, I wish I can do this, It's very lovely, the sunset in the back around is very beautiful, It goes with the background and How Twilight is, I have nothing bad to say about this, Lovely art work, I wish I could do this, I would be drawing everyday if I could draw like this, You should be happy and proud of your self with this. I love this, You have an eye and hand for Talent.
While perfectly fine techbically, it seems emotionally dead for me. The sunset, Twilight are really good in themselves but they just.. dont go together. Twiley's face lacks any emotion, just like she's sleepwalking, you could place her in space, mental facility or park without change of overall impression of the piece. Emotion on Twily's face + more dynamic background (like rooftops or busy town square) for that pose would be perfect; and the sunset would be much better with something like Fluttershy or some romantic episode, or perhaps Apple family returning home from long trip
Still, a really good artwork, I can only dream to make something like that , keep up the good work ^_^