It's a shame more people aren't giving you feedback, cause I thought your piece was really interesting >.>
Gave it a listen again, and there are just minor things I'd try to change in the updated version that answer call session between the piano and guitar at just before 1:00, maybe try to make the piano imitate the style of guitar a bit more, but don't know if you want that contrast.
I think that the section at 1:03 where things slow down, personally if I were playing, I'd slow down a fraction there to sort of sink into that more relaxed section before ramping it up again tempo wise
That mandolin at 1:20 with that high passage and spike, it sounds a bit piercing and synthy to me but not sure how you can fix that
At 2:00, interplay between instruments is nice but I feel as though you could add something to make it more dramatic if that's what you are going for, cause I hear the bass on the upbeat and beat 1 but that's it, but then again not sure what exactly you want
I really like that bit at 2:20, sounds awesome apart from the tamborine I think at 2:20, it felt borderline painful to my ears with headphones on
Only other thing is the violin synth, but we'll see about that hehe
But as I said before I really like it and it's a lot better than anything I could do by a massive shot so keep it up/well done =)
Btw feel free to disregard anything/everything I say since I have 1% knowledge about the instruments and even less about the style
Hope you get some good proper feedback from ppl around here ^^