I must have watched the Disney princess movies too many times because when I think of “body language” I immediately start hearing Ursula singing about it in The Little Mermaid. She’s talking to Ariel about impressing men, but the same holds for a job interview. “Don’t underestimate the importance of body language!” The quality of your handshake, how you cross your legs, where you put your hands, whether you touch your hair or face, eye contact and your posture are all critical to to how you will be perceived – sometimes subconsciously, by your interviewer.
Here is an excellent article on Career Builder that covers the basics and some not so basic tips for presenting your best, most confident (but not overconfident) body.
[Source: Career Builder]
Your heart feels ready to leap out of your chest. Beads of sweat build on your forehead. Your mind is racing. It’s not a full-blown interrogation — although it may feel like it — it’s just a job interview. While it’s no secret that job interviews can be nerve-racking, a lot of job candidates spend a significant amount of time worrying about what they will say during their interview, only to blow it all with their body language. The old adage, “It’s not what you say, it’s how you say it,” still holds meaning, even if you’re not talking. You need to effectively communicate your professionalism both verbally and nonverbally. Because watching your nonverbal cues, delivering concise answers and expressing your enthusiasm at once can be difficult when you’re nervous, here’s a guide to walk you through it: Have them at “hello” Before you walk into the interview, it’s assumed that you will have done the following: prepared yourself by reading up on the company and recent company news; practiced what you’ll say to some of the more common interview questions; and followed the “what to wear on your interview” advice. So you’re ready, right? Some hiring managers claim they can spot a possible candidate for a job within 
Read the Rest of this Article on Career Builder