You are judged on the basis of your performance in GD and PI where in your communication skills, presentation skills, leadership and analytical skills are assessed. So the golden rule is to start preparing as early as you can. You know how you must have fared in the exam. Even if it didnt go well, you still need to prepare for GD and PI because there are other colleges that you might have a shot at if not the premiere colleges. While preparing is one task, presenting what you know is another task. Your assertiveness, confidence should portray your communication, general knowledge and Managerial skills. To   be able to speak up, you need to keep yourself updated with the current affairs or general manners as how to conduct yourself infront of an interview panel. To write an essay, you need to know how to structure an essay, how to exhibit the knowledge through your words and have a proper introduction, body and conclusion in your work. As much as it is important to know what to speak, it is also importatnt not to know what not to speak. Honesty saves you from all troubles. Be clear about what you have studied, what your aspirations are and what your career goals are.  Please visit our page to check the preparation tips from our experts and toppers: https://bschool.careers360.com/articles/gd-pi-wat-preparation-tips-from-toppers-and-experts