The way you walk, the way you look at the interviewer and the way you shake hands can have a positive or a negative impact. Body language expert Julius Fast (author of Penguin’s Body Language in the Workplace) offers a few reminders:  slouching suggests depression, while good posture points to a take-charge attitude. Looking the interviewer in the eye (without staring) signals honesty.
Leaning forward to talk and back to listen conveys involvement and enthusiasm. Keep your feet flat on the floor and knees together, rather than crossing legs. Folding your hands in your lap looks immature, but folding your arms is too defensive. Instead, rest one arm on the arm of your chair, the other in your lap. Use hands to gesture, but don’t overdo it. The clincher is your handshake: not limp, not overly firm, just brisk and friendly.