Since nobody else has answered, I'll try and help.
I suspect you really mean processing, not editing.
It's not easy to suggest anything positive, because you have not explained what it is you find unsatisfactory about what you are currently achieving. You could post a clip here for us to listen to.
Generally speaking, the better your core sound, the easier it will be to get wherever you want to be. With that in mind, I doubt the mic is doing you any favours. You won't find many here using USB mics - they are notorious for their less than stellar quality. Also, contrary to what almost everyone else will tell you (well, all the "would be" engineers and sales people) dynamic mics tend to be more useful than condensers for rap.
Also, bear in mind that your monitoring chain is not just a pair of loudspeakers - the room they are in is just as important (some would say even more than the speakers). Monitoring is, by far, the most important link in the chain. If you are not hearing things as they really are, then you are never going to get the sound you want.
As someone new to recording, a little light reading wouldn't go amiss and I would suggest you have a look at this site -
www.tweakheadz.com - where you will find lots of tips.