not changing enough
its a slowly progressive piece and im not into the (in my opinion) too slow building pieces
yet this shows a lot of potential (in the beginning i though i was going to really like this till i noticed how long it stayed unchanged...), too bad it kind of stays at potential though i dont know what was in the first part of the intro (doesnt feel its missing something though) and i havent heard the outro (which is missing) so i cant say anything about that, but this is what i advice...
the melody stays the whole time while a simple chance at some moments could really do a lot, what i believe you should have done is make the last note of the melody a high note at a few moments
this is your current melody (higher number = higher notes, the - is to represent how long the note stays)
2---4---1-------2-3-4---1-------
if you make it at a few moments something like this (or something else)
2---4---5-------2-3-4-5-1-------
then it would be way more interesting, its not a big change and would still work fine with the style
the high note at 3.34 are not a success to me, the timing is the problem here
the sound at 4.07 is a success though, made it way more interesting once again especialy because of the change you gave it a few times like at 4.55