Based on your screenshot, I'm guessing you recorded this on a MIDI keyboard. I think that helped for all tracks, except for the drums, which could benefit from a little bit of quantization, to keep the entire track a bit more cohesive.
Also the start is a bit sudden. The Final Fantasy fanfares have the benefit of having the iconic melody to start with, which wouldn't fit in the time limitation, but maybe a short riser or a single instrument to start the rest of the orchestration off would be good.
Overall, though, this is a great track. Very comfortable to listen to. Good mix! Good job!