Generally speaking, you want the top grades, and it is a complicated process, but you can contact your counselor and class teacher at that time. They should help you solve some procedural problems, but it is mainly your grades. The application usually ends in the freshman year, and the interview is also very important. You can often brush off the obstacles to study well and pay attention to your math and English (because communication pays special attention to those two subjects). However, as an experienced person, I advise you not to study your current major wholeheartedly. In fact, there is not much right or wrong in your major. The key is whether you work hard or not.