You have some really nice ideas here!
A couple things to improve:
1. I think you could have chosen a less over-used chord progression for this piece. If not, then maybe vary the progression a bit sometimes, it will add a lot more interest to the piece.
2. You need a strong melody over your ensemble. Right now you have a lot of nice orchestrated chords throughout all of the instruments, but to have a memorable piece you need to have more melodic content. This comes in a bit around 1:20 with your violin solo, but you should have more of that throughout.
Overall though, really nice sounds you have going!
- Conor S.