Haha, just listened to Jetstream a while ago, still loving the organic instruments. Again, I may have added some deep beats way, way in the back just to accompany things, not to drive them on though. You know, low bass and soft on.
I feel like you could've make things more... less of a song and more of an experience through some more creative panning, like near 1:30 or 2:07 It would be difficult to name which instrument I think would sound best panned, but general rule of thumb in case, use it on select instruments (your choice), use it wisely (as in not everywhere lol) and never pan +/-100%, even +/-80%. +/-75% is a slight push for me.
Apart from that, I very much liked it. Great going.