It looks really neat, like she's about to take off. Thanks for crediting!
Have you ever tried vectoring? I'm not the best person to explain it, but #MLP-VectorClub has some good resources. Anyways, there's a free program, Inkscape, and it's a lot different from drawing, but you can get really smooth lines and stuff. That's what I did to make this image, and you can download the vector file (.svg) from the link in the description and edit it to add wings (or any other changes). *shrug*