Could use heavier bass, but it still sounds great.
This is really cool. I can't think of any specific criticisms. If pressed, I might ask you to diversify your melody some, but I'd feel bad while doing so (the song is only 0:27, I mean come on).
There are a lot of really nice details to your sound here, like that weird high pitched scrape I hear every now and then. Great drum work. Good stuff.
I would really love to hear this expanded into a song.
BTW - saw this song in the audio advertisements page. If you could send some criticism my way on my latest piece, that would be awesome :)
Please contact me if you would like to use this in a project. We can discuss the details.