In order to be more competitive you will have to get your CV to tell great things about you to your potential employer. That means you will have to take certain volunteer work in various jobs to gain experience as well as jobs that allow you to show leadership skills, people skills and others. And also learn to dress more cooperate and be confident in your outlook not rude. Because in seeking for work its also about what the employer sees and the impression conveyed. So use your time in school to build up your resume ( C.V ) and yourself.