cppp;
K that was a nice start. I havnt herd that exact song by basshunter, but that definitly sound like him. if the melody is correct than dont touch it, however you want to add a more stringy pad overtop of that siren. maybe even remove it? Thicken up the bass as well. Either add a bass boost or what i usually do (if your using FL studio) is set the kick's fx channel up with a Fruity Peak controller, and then on the main fx channel add a fruity balance. Then right click the volume knob on the balance and link it to the peak controller-peak. Then go back to the peak controller and unmute the kick and adjust the top wave pattern to your liking. I think its a neat effect, any questions just pm.
Also could you check out my new song Brute force
Take it easy,
B|3