You almost have it. the changes are nice. but here is my constructive critisism. The simple two chord change gets very repetative after a while. A lot of powerful saw synths are used. it sounds nice but it is a bit too much. The bass is a little less powerful compar4ed to the rest of the song also.
But I think that you can make a sick remix. Ive heard some that are god awful and this one actually made me listen to all of it :) feel special lol.