DAYUM! Ethereal from the start, never quite letting go of that otherworldly feeling, even when you bring in quite "mundane" instruments, consistently hitting the listeners' feelings with this harmonic shower... Absolute eargasm.
In order to keep with the spirit of providing constructive feedback, I had to re-listen a couple of times to find something to nitpick: The flutes in the beginning feel a little unrealistic, because there are no pauses for any actual real-life performers to breathe.
That's it. That is everything I could find in your track, that might benefit from doing it differently than you did. You're the ideal "after" picture in any composing course advertisement.