Show how you meet the needs of a given job. Refer to the specific job in the first paragraph. Here is a chance to highlight several additional skills. Tie your experience to your job skills and relate your skills to the job description. Type and proof-read your cover letter.
First impressions are important.
Appear professional by not making mistakes. Employers receive hundreds of cover letters and resumes daily, so get right to the point with as few words as possible. Next to your resume, your cover letter is your best selling tool. Let your personality come through. Discuss employment gaps in interviews.