Levels
The guitar playing on this song was lovely, but there were two easy-to-fix problems that stopped me from really enjoying it.
1. The volume levels seemed way out of proportion at times, particularly the piano. I think that your five parts need to sound more in proportion with one another.
2. Perhaps it was just the lack of percussion, but some of the guitar seemed a little out of tempo, like you were strumming just a little after the downbeat each time.
For a man of your talents these problems should be simple to correct. Keep it up!