Body Language is one of the most important elements that you need to increase your confidence.
It shapes your personality and relationships. You can impress people without any single word through the power of body language. Body language includes facial expressions, eye contact, body postures, gestures, and other physical body movements. Body language is important for you because people judge you on the basis of your body language. Their subconscious mind actually picks up the signal that your body language sends.
The first thing you need to do is to increase the span of your eye contact when you talk to people. You should keep a constant eye contact for at least 80 percent of the conversation. This shows your dominance and undoubtedly shows that you are confident. This attitude really attracts people. Next thing you need to do is to improve your walking style. Don't walk at an increase pace. Always try to walk in a relaxed manner. Who doesn't like confident and relaxed people? It shows them that your life is in your control and that is why you are so relaxed (even if it is the other way around). Smiling is another important factor. A smiling face is always considered attractive. It shows that the person is confident. As far as standing in public is concerned, you should always stand in an 'open' manner (power poses). Don't compress yourself up as that indicates low confidence. Finally, you should use hand gestures while talking to anyone. Hand gestures captures attention of the other people and it makes the conversation really engaging.