Are you still doing this? It's been a long time since I have been drawing ponies last time and today I felt like drawing one! I need practice!
It was hard but fun to do your oc. I messed up couple details as I didn't pay enough attention, like tail/mane swirl being wrong way. Sorry! Perhaps I'll fix that later. At least I tried and found it worth my time!
I have an oc I once created in 10 minutes and abandoned it right after. She has no name and is only a poorly drawn concept with rough lines. Perhaps you can bring her back to life?
She has a magic beam flowing on the edges of her mane. Her cutie mark is a magical feather pen