Creating and leaving a best first impression is one of the most dreaded tasks in personal or professional lives. All it takes is just a quick glance, not lasting 3-4 seconds, for someone to judge you when you are meeting for the first time. In just 3-4 seconds, the other person develops an opinion about you based on your appearance, body language, attitude, mannerisms, and finally, how you are dressed.
You might encounter new people throughout the year, where you will be adjudged and others will form impressions about you. The first impression is difficult to reverse hence making the first meeting greatly important because it builds the base of future relationships.