It's well arranged, but it sounds incomplete.
I like the arrangement directions this mix takes, but it's missing a few things:
1) A bass voice. It's my opinion that you should write an additional part that plays notes in the C1-C3 range, possibly doing simple arpeggios underneath the thematic melody (the exception, of course, being at beats 3 and 4 of the last measure of the loop, where the melody hits a chromatic stepwise resolution -- the bass voice should play the same resolution, but in the lower octave)
2) Another drum pattern or two that you can interchange with your current pattern for more flavor or variation. You'd be surprised how much a simple beat change can alter the feel of a section.
3) A working harmony. This piece seems like it'd be more silly with some percussive major chord work -- again, resolve with the chromatic as with the melody -- and the more ostinato the chord work, the better. You could even have the harmony syncopate with the drum patterns and create an interesting rhythm-countering experience in the background.
What you've got so far is good work, though. Keep it up, Shawn!
~Joshy676
P.S.: Sorry I'm so late writing this review, especially after all the times you've asked for one. :P