In order to win the scholarship, you need to demonstrate you are an outstanding scholar, athlete, leader. For some students, their application will clearly show that they meet these criteria - candidates who play several varsity sports, are class president and team captain, have high GPA's in honors classes clearly show that they meet the criteria.
Look over your own application and see which areas need to be strengthened and develop your essays to meet those goals. There are so many topics that could be nuanced a different way in order to best share your strengths.
My DD used one of the essays to expand on an extracurricular activity that she helped to found and held leadership role in; this was important since although she was involved in many activities, she wasn't a sports captain or club/class president. She wanted to show that leaders exist in other places besides those obvious, visible roles.
She used another essay to share her experience at her p/t job as lifeguard, demonstrating how her confidence, leadership, and responsibility levels grew as a result of her three years in this demanding job.