I think a better instrument could be used than the organ for those stabs all together, and perhaps the humanization function for your keys.
Your writing and phrasing is great. It's held back only by a lack of percussion in the first half, bass, transition FX, etc., and of course the cheesy real instrument synths. I would recommend using ... synthier instruments to attract less scrutiny of the ear, or spending some time looking through places like Bedroom Producer's Blog for better synths.
I also have a tutorial for importing Muse Score sfz instruments, which are actually quite nice quality, into sforzando the free sfz player for use in other DAWs. May be of use to you. You can find it in my news posts along with a lot of other free and low cost resources.
Your final chorus is nicely balanced relative to the rest of the song.
I also notice the mix itself feels very centered and dry, particularly when there isn't a lot going on. Your accordion could easily be spread out with a melody and harmony in both channels, etc. The organ might better be replaced by a lower octave piano or something like Pocket Blakus Cello
I can't really hear a snare if there is one at 2:30. I think that's a shaker, but it's drowned out by piano/key parts that aren't the main melody.
Beyond that, sweet piece. As your knowledge of your software and breadth and width of options increase over time, I see a great future for you in music. Already you're creating moving works, with a clear knowledge of what they are and where they are meant to go. I think you did splendid work, and I'll be happy to see you keeping on doing the same! I can only hope my comments be of some help to you and spur you onward to bigger and better things. Keep at it!
Thanks for coming out to NGUAC!