Beautifully played, great job with the orchestration of the different layers, and lovely attention to detail. I think you should be proud of your efforts here.I agree that this is about sadness and grief and based on the idea of a funeral march rather than moonlight.My main piece of feedback is that the triplets feel a bit restless/stressful. I don't think it's so much the tempo (which is fine) as a slight unevenness of rhythm and tone. I would advice you to practice this while approaching it almost as a meditation. Breathe very peacefully and calmly throughout the piece, while still feeling the grief and sadness, and transmit that meditative state into your playing. You can also do focused work specifically on the triplets. Practice only the triplets and see if you can get them to be very even and quiet.I know you keep track of many things in your head, but it's there in your playing now and you can start filing it away in your subconscious and focus on the big picture now.