This takes me back...
This actually sounds a lot like when I first started. To be honest, it's sounds pretty terrible man. I'm not trying to hate, I'm just giving it to you straight (lol, that rhymed). But I don't want to tell you you're bad and then run away, I'm not that mean.
The first thing would be the flow to the base and hats. You need to hit those key rhymes in those places. Once you start doing that, it'll come running out of your mouth much smoother than it is now. It actually is easier to memorize rhymes when they're on beat too, something Shakespeer figured out actually haha.
The next would be your sound. Working on the above mentioned may fix this, but I have to mention it. At times you sound like you want to go all out, but it comes out almost like a whisper. Don't be afraid to just go all out and put some voice into it. Don't hold back! I know those computer mics don't allow you to do that all the time, but there's way's around it.
Anyways, keep at it, you got Alot to Learn.