Choose a few phrases in the opening paragraph that let your reader know what to expect in the body of the letter. Fill Out the Application.Make sure you meet the minimum experience and training requirements in the job posting. The middle paragraph sells your credentials to the employer. In this section, show how your background perfectly matches the job for which you are applying. Constructing Your Resume. Connect with a career counselor to go over your resume, cover letter, and more to make sure you're ready to apply.