In this article, we share the steps for writing an application letter along with a template and an example for you to use when writing your own. Get straight to the point in the first 2 lines.A cover letter usually is three paragraphs long and outlines why you are applying for a specific position, a brief overview of your professional background. I am a first-year student at Harvard Law School and I am writing to apply for a summer internship at the Middlesex District Attorney's Office. I am going to tell you the four things you must include in a job application letter for it to be successful. Learn how to write effective resumes and cover letters, view sample resumes and cover letters, and get tips for completing job applications. Choose a few phrases in the opening paragraph that let your reader know what to expect in the body of the letter. The first paragraph of your letter should include information on why you are writing. Dear First Name Last Name or Hiring Manager: I am writing to apply for your position in wine wholesale as advertised on Handshake. However, some employers will request that you forward a resume and cover letter.