Not too bad. The first drop was pretty cool, but some more stuff would have been nice.
You're at the right place, but a little more seemed to be needed though. Maybe a nice beat that would go just as fast as the heart or a some nice transitions introducing some neat sounds that go along with it but at the some time not change the whole song.
You're very close to the bull's eye. Your track is very catchy; just a little more and you're there. ;)