A job application letter is the perfect opportunity to showcase your communication skills—and if you fail to do this, it is unlikely that you will be invited to an interview.
The first step is to introduce yourself politely, state where you saw the job advertisement and why you are interested in the position. For example, if you were applying for a job as a secretary, your opening paragraph could read something like this:
Thank you for considering my application for the secretary position that was advertised on www.jobs.com. I have five years of experience in the administration field and I am ready to take on a new challenge.
Your letter should then continue to discuss your relevant work experience and skills. Always finish the letter by thanking the person for taking the time to read your application.
In terms of showing that you communicate effectively, the spelling and grammar in your letter should be perfect. The tone of your writing should be professional and friendly.