Enya the Pegasus (OC)

here is a bit of a critique for you: The anatomy is totally off. Sorry. It needs work. Look up some pony anatomy tutorials and that will help a lot. The legs are too short, the head is out of proporation, and the body is too squashed, it should be longer. Look at reference photos while you draw for the basic body shape- espeically for the wings. Use RD or FS as a reference.
However, I like the color combination. I would suggest simplifying her patterns as well- perhaps get rid of the stripes altogether. She is cool without them, and too many bright stripes can be an eye-sore. How many ponies do you see in the show that have that? None. A few, however, would probably be all right. I think stripes around the hoof area or maybe some faint marks around the body would be more believable.
Try messing around with where you want the green color and the yellow/beige color. Might I suggest trying to make the hair just one color? Try the green or yellow for the hair and the other color you don't use for the eyes. Good luck and keep drawing!