Your cover letter is a succinct introduction that starts a conversation about what you bring to an employer, organization, or educational program. In this tipsheet, you'll learn about key components and strategies that make the biggest difference when writing a cover letter for an employer.Explain why you are writing the letter. 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. Make use of the subject line and include the job title and reference so it gets to the correct person as quickly as possible. In this article, we'll share the top 6 tips for writing a powerful cover letter and hopefully help you land the job you want. 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 an unpaid summer law clerk position at the Orleans Public Defenders Office. Find out how to write an effective resume and cover letter, and how to respond to key selection criteria. Professional communication is an important aspect in the job and internship search process.