Some decent tracks in there! A few tips, for example, at 11:47 where oi and move it to the drum are playing, try fading the track that's playing out down a little bit as the new track is building to give the effect of the one coming in getting a little louder and overpowering the old one towards the drop or the breakdown. And also right on 12:00 there i would have cut the old track out for that bit of the build or at least LPF'd the old track to give more oomph to the build for the drop on oi. And one last thing, try not letting your tracks mix for so long sometimes, once you learn your songs well you will know your breakdowns and builds and stuff but try cutting them out a little earlier if you know a breakdown is about to happen on a new track.