The dude below me is fucking retarted.
Mastering is different from mixing.
But, your mixing is very bad. Its very distorted.
Technosaur said you need a better kick, which is partially true, but all your really need to do is eq it, boost it a bit in the lows and a tiny bit in the highs.
Back to the mixing. To fix this either lower the volume of everything by the same amount (its easier, but results in still not a good mix, but it does get rid of most distortion. The other way, is to adjust the volume levels of everything, so that your master volume is around -2.5db