Not a music expert in any way as I write this review. The song overall was very beautiful and really captured a unique feel to the music style. Very interesting way to end the song. Like it. Your strongest part of the song was the middle because you simplified some instruments in the song and was very harmoneous. The only thing holding it back it the intro. Not the first 18 seconds, cuz that was kickbutt :D, but after it the waaa sounds seemed to keep the song back and didn't seem to flow. I hear a normal flow waaa then a higher pitched waaa, but it seems too simple and a bit redundant while also seeming choppy because there seems to be no transition in the beat, it just jumps and makes the listener aware something's off...ex. 0.36-0:50 it didn't seem to fully "flow". 0:50-1:15 flows muuuuch better, but it seems like the du du du du (feels like a bouncing ball instrument should be removed at 1:15 to give it a change of pace to enhance the overall song. Nothing after 1:43 to improve. These are just things to take into consideration when building the song. Keep building it into a masterpiece man, and good luck! :)
-Dan