Mock Trial

I have my "mock" trial for my basic trial advocacy course on Monday. It'll be in the real courthouse, in front of a real judge. Too bad I don't feel more like a real lawyer. We get to work in pairs, which is good, but I'll still be very glad when it's over. We have the defense side of a criminal case - couldn't be further from what I intend to practice, but oh well. Anyone have any tips?