There is no "perfect" cover letter, but there are several key tips prospective employees should keep in mind when creating their own. Following this advice and drafting several copies before deciding on a final draft is important for success.
When writing and rewriting a cover letter, write to a specific person. Cover letters should always be limited to one page and include a signature .
block and subject line. The writer should always spell- and grammar-check the document before finalizing.
All cover letters should explain why the resume is being sent, and explain how the author discovered the company. A cover letter should convince the reader that they need to see the writer's resume, and should showcase elements of the writer's background.
Characteristics of a bad cover letter include poor grammar, lack of focus, and embellished qualifications.
More Reference Links: http://indylaw.indiana.edu/career/letter.htm http://www.career.vt.edu/jobsearchguide/coverlettersamples.html