i was a bit doubtful at first but that is some QUALITY orchestration. there are some minor nitpicks i have; the central piano motif could have more character (i.e. using the sustain pedal, playing more on the left hand, adding a third to the melody on the right hand) and the woodwind burst can get a bit repetitive without any variation, but overall i think you've successfully brought forward an epic, cinematic arrangement!
i need to learn more about orchestrating so i can sound this grand too. nice work man :DD