Sounds really good man!
I really like the writing/composure. The song definitely has a majestic feel to it.
I'm no "Bill Metoyer" but to me, sounds like the volume could be brought up a bit.
Maybe some very slight EQ. More Highs wouldn't hurt in my opinion.
I've never written or mixed anything classical so there's always the possibility that I don't know what I'm talking about.
Great piece!