while I'm here, nice, there is a nice forwards and backwards spatial quality to this one compared to the last one I heard of yours, which was much more a wall of left and right. Really like this. Great stuff, good job.
I agree with kryptonaut about the sudden ending. You could try a normal fade, or perhaps better, a staged fade, with individual sounds being faded/removed in turn until you are left with only one instrument being played. The trick is in finding the right one to leave exposed at the end. If it were me, I would try to do something melodic but unexpected