I made it past the first interview for Best Buy mobile and now I have one with the GM on Friday?

Is it hard to make it past the first interview? The manager for Best Buy mobile told me that she really liked me as a person and thought that I would make a great addition. I really want this job. Is there anything special I should do to convey this to the general manager? Plus, I get really nervous when it comes to interviews. So, I don't know how this is going to play out.