i would work on the drums in general mate, try layering with a heavy snare, and a beefy kick or subing, to kick a bit more out of it, try changing your tracks up a bit, need to be a bit more interesting , dont get me wrong they are good just need a lil more.
Listened to all three tracks. I think the first track had the smoothest flow to it. The second had the better drum pattern. The third was generally good too. I think all three tracks have the general bones to be great tracks, just that they all sound alittle thin.
Darkists advice on layering drums should be followed.
I personally thought all three tunes were a little too similar. They were all good, but sounded like remixes of each other. Its good when you discover a formula that works for you, but you shouldn't let it dictate the sound of all your records.
Good stuff mate.