I encourage you to continue this genre! For a first attempt with chillstep, I think you captured the mood very well. I'm loving the concept of the song, and 1:27 is really cool. Oh, and the part beginning at 2:35, the piano work is nice there.
Did you try experimenting with a longer sounding snare? I can't help but wonder if that would help it sound better, but I have never tried chillstep, so my advice here should probably be taken with a grain of salt. (ew, a cliché) In fact, I think I want to try this genre now. Yeah.
I think I will try chillstep again, after I finish up a few more orchestral tracks, and get a bit more comfortable with logic.
Thanks again for renewing my faith in this forum, I thought it had got to the point where posting music here and asking for critique was pointless. Good work proving me wrong.