I'd feel just the same rocky, but I have interviewed people and I find those who are just themsleves, to be the most appeally. Those who have text book answers and who go over the top are seen right through.
Have some good answers to why you want the job, why you left the last one, what you liked and disliked about it and why you should be chosen above the next person.
Then make sure you have a couple fo good questions to ask them. Why is the position vacant, how can you progress, how many in the team; hwhatever is relevant but try to steer clear of questions about pay and perks. Good luck!