It's on it's way.
Not bad, not bad... Unfortunately, the fact that it was all synthesized comes out a bit too clearly, especially when you get into that higher range part around 1:22 and 2:24 that have the drums smashing in the background. I would say perhaps either hush the drums a bit or add some base for depth... Change something there, because the lightness of the melody doesn't match the drum smashes. The little addition on the latter of the mentioned parts adds a bit, but it isn't constant enough to really add the support.
The melody isn't too bad. Listening to it the first time, I was placed under the impression that it was a bit repetitive, but then when I listened to it again and again to write this review, I realized that it never really is the same any two times. It builds the first two loops during the first half, then steps aside completely for a small interlude (those give bonus points!), then there's the guitar overlay, then it becomes a sort of harmony to the guitar melody that kicks in.
Talking about the guitar melody (3:53), I was tempted to say that you probably should have turned down the main little tune rather than blasting the guitar up to make it more noticeable, but then I'm not entirely sure whether that would have been good for the transition out. Either way, it's something to play with. However, I do believe that you should add a few (1 or 2) bits of synchronization with the acting harmony so that it meshes better. It gives you more bonus points.
Besides that, I've never heard Mogwai, and only really know who they are because of Wikipedia, but I'd rather say second-rate artist.
Oh, and I never really noticed the Silent Night part. Just saying. Was that the interlude?