All I can say is test, test, test!! The more you do it, the better you'll get. Practice that oral too. Have answers ready for the common questions. (why do you want this job, why should we hire you over everyone else, give an example of one of your good traights, and even harder, give an example of a bad traight (if you can take a bad traight and turn it good it's kinda like bonus points))
Confidance without being cocky and sell yourself like a sleeper on a corner.
Oh ya, I found in this day and age starting an answer about work with something like "after ensuring the scene was safe for my crew and myself" etc. Management loves safety.
