Hey I'm really liking how this is going. Keep it up.
I do have one criticsm. I hope you understand what I am describing. When the beats start to come in around 22 seconds you have made the tsss (cymbal or whatever it is) parts stereo. Alternating between coming through the left speaker and then the right one. While I think this is certainly good and I say go crazy with it, it did make me feel a little sick. And I think that is because all of the sound is coming from alternating speakers. If you were to mix it so say 70% on the left side and 30%on the right and then alternate that, then I think it would be smoother for the ears.
I hope that made sense :)
Other then that just keep up the good work and I look forward to hearing the completed piece! :P