How to Properly fold a letter and look professional

From this video, learn a proper way to fold a letter professionally and place it an envelope. Basically take the letter and lay it in a flat surface, then find a spot in the paper which is almost a certain way up and then fold from bottom to that spot and crease it. Then fold from the top above the previous fold and then crease it so that it is a three fold letter. Make sure that the letter head is up when you place it inside the envelope. So that when a person opens the letter the letter head faces the person