I haven't used mixcraft, but what I suggest doing is recording everything in FL studio and have your basic levels how you want them and make sure there isn't any clipping. Have you mix peak at around -6db and export the wave files into mixcraft. It's easier and sounds better to mix vocals with the beat with all of the individual channels there, the vocals will sound like they sit in the mix instead of on top of it (if you catch my drift). Anyways, I like the song, just trying to give some advice for future endeavors.