A cover letter is  just as important as your resume.  It is an opportunity to personalize  your resume and sell your skills. Include these important sections in  your cover letter:
    - Heading and greeting
    Include the date, your name and your contact information. Address the  letter to a specific name and/or title whenever possible. 
    - Opening  and introduction
    Explain who you are and your reason for writing, including how you found  out about the position. 
    - Body
    Sell yourself. Reveal why you are a perfect and unique match for the  position. Explain why you have chosen the employer. 
    - Assertive  closing
    Politely take initiative toward further action and next contact. 
Don’t  use a generic, form-like cover letter. Use these tips to write a fresh  and informative cover letter:
Be confident, positive, and  focused
    - Target your letter to the audience and  industry.
 
    - Be positive about your current employment situation  and professional future.
 
    - Emphasize what you can offer the  employer.
 
    - Express your focused career goals.
 
    - Don’t use  empty or unproven claims about your abilities.
 
Be  concise, accurate, and polite
    - Use short sentences.
 
    - Keep  the letter to one page.
 
    - Proofread your letter thoroughly.
 
    - Thank  the reader for his or her time.
 
    - Sign your cover letter — blue  ink is best to show the letter is an original.