It follows a template; The Situation (the circumstances); Task (the responsibilities, assignments); Action (what you did in response to the Task) and Result (the outcome of your action). 

In a scenario where you have to describe a time where you led a project. Using the STAR Method will look like this:=

Situation: My team had to organise the first cultural day on campus. 

Task: As the public relations officer of the team—I communicated our effort to the students. These include the activities of the cultural day, the vision and the goals of the cultural day. I also had to determine their views about the cultural day.

Action: First, I ensured I understood the aims of the cultural day—and the information I was sending out. I then developed a table for responses, themes, specific issues and comments. I could check back if any query. I grouped feedback themes and noted any comment. I was careful to work systematically through the feedback sheets; that way, I did not miss any information. 

Result: My team was pleased with this work. We were able to pull off the first cultural day on campus, with good participation from the student body. 

Other communication techniques are SOARA (Situation, objective, action, results, aftermath), storytelling—telling a story with a beginning, middle and end, and repetition for reinforcement.