Hey there,
Swell tune you've got here. Like, really, I quite dig the mood you go with and you execute it quite well!
And considering it's chillstep (aint it just dub?) the minimal touches just make it even better, in my opinion. At some points in your track, I do wish you would do something with that arp to keep the listener intrigued. Like at the bridge / buildup around 1:15, why don't you use a high-pass + resonance modulation of some sorts? Maybe even an lfo, so it provides 'more' buildup, and thus, more satisfaction when it hits. Just a little idea. :3
Much like how you introduce the breakbeat part (oh god, that was win btw) with pitching up the arp - it provides a solid, *recognizable* buildup - you expect something to happen, and it does.
Solid tune mate, I'ma check out some more of your work. ;-)
~ La_Yinn, --'