I agree with JB, Y'all gotta memorize your words, to the point you can say them backwards. Once you've gotten comfortable then it's easier to throw that swagger in your delivery, and that make what you're saying believable. Also try doing some ad libs behind your verses.....One last thing, if you have to start out with an excuse when introducing your material, then it's not ready for presentation. But keep at it. You do have lyics.