Not bad, but can be improved.
First, real instruments would do a better job than default sounds from a notation program or MIDI instruments.
The arrangement has some flaws. In the bass instrument you should use the root of the chords (generally). The only exception is if you make a saxophone band arrangement and it's meant to be accompanied by a bass/ double bass/ bass guitar/ sousaphone...etc.
Also, when write unison or octaves with similar rhythm, use same rhythm, other way it will sound messy (0:16).
Cheers and I look forward to your next arrangement.