1 Metal/Dubstep track mixed & mastered to a Skrillex / Knife party quality

1- Metal/Dubstepish track mixed & mastered to a Skrillex / Knife party quality. I have had 10 tracks Mastered just recently that i did the mixing for, but it feels as if they are not as clear & loud & punchy as the artists mentioned above & others. I am very curious as to how to get that sound that i want ,and i don't want to waste any more of my time mixing or paying a Mastering service if it is just going to turn out average or get put through a pre set . If it comes down to paying some 1 with years of experience a bit more then so be it .