How to make the best Impression with people

1.  Smile slowly after you see the person:  Carrying a smile always will not personalize the smile.  Broaden your smile slowly for a second or two looking at the individual and this will make the other person feel happy with you.

2. Look in the eyes: Maintain eye contact with the individual with whom you want to interact.

For opposite sex maintain continuous eye contact, and in case of men to men business relationship, have a fleeting eye contact (maintain eye contact for the point being communicated, break eye contact and again maintain eyecontact)

Do: BE CAREFUL TO SMILE FRIENDLY WHILE MAINTAINING EYE CONTACT. 

3. Maintain Straight Posture - Ensure that you head is held high, Shoulders are back, chest is to the front, spine is straight, hips are tight - This will allow you to maintain eye contact, have energetic posture and look a WINNER. 

Relax your face - and body - don't think of  any expectations of the other person

4. Undivided Attention: Look straight at the person; pivot towards the person; make the person feel that they are the most important person

5. Dont Fidget - Donot make nervous movements, bored movements, be still and composed.

Don't touch the nose, ears, Avoid hand motions near the face.

6. Learn to study Body Language: Observe TV in mute and try to make sense, You can practice the same thing with classic movies.  Helps train you to observe the body language of the other person.

Similarly record your actions and watch them on mute -- understand the impression you are making...