I'm honored to be lucky enough to get an early listen, lol! I really like the instrument choices in the orchestration, they blended together well and had a nice sound. The trumpet melody was very pretty. I'm going to piggy back off of what Selkione said about the harpsichord and suggest another possible solution: The harpsichord and the octave up trumpet in the end are somewhat similar bright sounds that are competing in the same frequency range, so the harpsichord gets masked in the mix a bit. If you changed the harpsichord to a different instrument that has a different sound, my suggestion would be a xylophone, it will stand out more and won't get masked.
Great work!