A cover letter or letter of application accompanies your resume. It should market our qualifications and communicate your skills, accomplishments and potential to the employer. It should also highlight experiences most relevant to the job/employer.
Cover letter basics are as follows: Address the letter to a specific person-by name when possible.
Get straight to the point. Describe why the employer would benefit from hiring you.
Make sure to use simple but direct language.
Refer the employer to your enclosed resume.
Ask for an interview and let them know that you'll be in contact to set up a time that is convenient for them.