Can't sing, bad mic, loud pc, drunk? You just identified ideal art mode. All the music experience in the world doesn't lead to the random experimental creativity that only inexperience can produce. This is basically as good as most the other mumble rappers out there. I'd have turned the level on that cow bell down a tad. I'm guessing it's a cowbell. I'd also have turned the reverb off or down on the vocals. I'm not a fan of the drone that trailing reverb creates on a mix.
Loved that reverse at the end. You got some good ideas in this. Good luck in the bingo comp.