Keep your legs close together while seated. Use pauses for emphasis. Use gestures that enhance your verbal message. Showing that you are interested in the conversation portrays enthusiasm. You are showing that you want the job and are interested in the organization through your body language as well as what you are saying.
Nonverbal communication includes much more than body language.
Many of the mannerisms that people have are done out of habit, and most times they are not even aware they are doing them. In order to change behavior, we must first be aware of the things we do. Once we become aware of the habits, we are much more likely to have the ability to change them. The ability to listen is a nonverbal form of communication. Being a good listener takes effort and practice.