Decent
I'm actually surprised. This wasn't too bad. You're a pretty kosher freestyle artist, it would seem. Still need to work on 'finding your voice', but that can only come thru practice. You've got mad potential man. Keep it up.
Tips:
Background noise removal - Either turn down your mic sensitivity to cut out that excess white noise that makes it sound like you're rapping in your bedroom or use a plug in such as Noise Removal on Audacity.
Mixing: Look into Compression and Equalization. I think these two things will really help you out a lot and make your tracks sound exponentially better. Even if they're freestyles.