I really think you should have gone with something with more energy and more dynamic. The composition of the drop doesn't feel right and the sounds are kinda grainy. Also the drop comes in really really late. That's a long time to try and keep someone's attention so it's going to be really hard to get someone to listen up until that part. Also try to experiment with SF effects to produce more quality sounds.
I think you should make the drop come sooner. Try to work on making a more defined ending. Try out dynamic layering as well.