few things...
1. what I really noticed was how insignificant the kick was. for hardstyle you can't just put a "hard sounding" kick in. it has to have a considerable amount of bass to it, and this one has almost no bass at all.
2. hardstyle melodies have to be very over hardcore and aggressive, as well as the synths used for them. neither of which, however, were.
3. when you make hardstyle, you have to make sure everything is very loud and over the top. don't forget that hardstyle originated from gabber and hard trance!
so, waaay more bass, more hardcore and aggressive melodies/synths, make it louder and over the top, did I mention bass? :)
not bad overall.
for an excellent example of hardstyle, listen to some Headhunterz.