Listened to it a couple of times. I found out that it loops pretty nicely :P
But to the review: Two major spots that I think needs improvement are the drops and melody.
Not that the melody wasn't bad, just a bit repetitive. The difference after the first drop was almost nonexistent to me at first. Using different melodies at drops wouldn't be a bad thing.
And the drops, well i found them seriously lacking energy. I know that this is meant to be chilly, so I didn't expect to hear any aggressive wubwub synths. But I'm not sure if i heard -any- bass. The buildups were also a bit bland. They really didn't get me excited for the upcoming. The drums are fine, but they need more variation. A couple more breaks would do the trick. The hi-hats also could use more 'weight'.
One last nitpick from me is that the piano notes should be longer.
But just to not be a simply negative; I absolutely love the pad during drop :) (in my opinion it should've been higher on volume). The singing birds was also a nice touch, and the plucky synth is nearing perfection for me.
I don't personally think that this song should be drum and bass. In my opinion it should have been something more close to ambient. But those are just opinions :)
So overall, as a song it's not that bad, but for being drum and bass it needs more energy. I listened to your song TimeFlow, and that was beautiful. You clearly know what you are doing ^^
R4R