This is absolutely gorgeous! Okay, first of all- I really do not like MLP due to the sheer amount of force I've had it shoved at me BUT- this work here, this is amazing. While the face and the hooves speak of an MLP styled art the rest clearly comes off as your own and in a most magnificent way.
The cutie mark is very detailed but not overly so that would crowd it what with the size and the way it flows really matches up with the style you did her hair in. Love the hair. So jealous that I can't do hair like that. The mixture of colors, light and dark and the bit of frazzled curling on the ends- it really pulls itself together in a fantastic way.
The wings are also very awesome. Just detailed enough to bring the feathers into awareness but not so much that it crowds out the rest of the work. The shadowing is amazing, the lighting even more so. You really are very freaking talented and I adore you.
My favorite thing about your style: The colors. Color is an underused bit of expression in lots of art lately.
Also, just noticed this was Traditional art. I would have never guessed. You have me so curious about your process and medium! Anyways, I've rambled enough. Keep it up, darling. You're awesome.