In a group of people, you should watch the person you are interested in, no matter who else is talking. If you concentrate on that person even when they are simply listening, you show that you are extremely interested in his or her reactions.
The Big-Baby Pivot
People are very conscious of how you react to them. When you meet someone new, turn your body fully toward them and give them undivided attention. Lowndes says, "Pivoting 100 per cent towards the new person shouts, 'I think you are very, very special.'"