Interviews can be nerve-racking for even the most calm, cool and collected professionals. With the exception of those seasoned job hoppers who saunter through the process unfazed, most people get a little unstrung the first time they meet with their potential boss. Nervousness in interviews is usually brought on by fear of screwing up, inadequate preparation or anxiety. Even the most experienced candidate will trip up trying to put his best foot forward. Here are a few tips that may…