If you want to get an employer's interest, you will have to write a Cover Letter that commands their attention.
Sure, the resume will outline your educational and experiential background, but it doesn't afford the flexibility of a cover letter. The cover letter is the forerunner to the resume (CV). It is probably the first thing an employer should read, or at least scan. And if you can't gather attention with the cover letter, your resume has to do extra work to impress the employer. It is better to make a great first impression with the best cover letter you can write.

An outstanding cover letter gives you an opportunity to modify your qualifications in a better way compare to the resume. It helps explain in details, to make the employers understand the reason(s) behind your qualification.

"The cover letter is your best chance to clearly and briefly state why you should be chosen for the job. Explain how the skills you have most closely match the job's requirements. (It's a good idea to have the job description or classified ad in front of you as you write the letter.)" Remember that a cover letter is brief and simple.

Hopefully, this good example of a cover letter will provide you a solid guideline for writing your own masterpiece. You'll get the employer to take notice and call for an interview, If you do it right.

Below is the guideline for a cover letter

Cover Letter Guideline: 

Applicant's Address

Date of Letter

Contact Person's Name and Title
Employer's Name
Employer's Address

Salutation:

First Paragraph: Identify why you are writing. Indicate the position name or the kind of work for which you are applying and detail how you heard of the vacant position or the organization. In some cases, you may be responding to a "blind ad", but if possible, use the name of the company in this paragraph.

Second Paragraph(s): Explain why you are interested in this type of work and why you chose this employer. State relevant work experience, education and identify the specialized qualifications, training and skills you have which correlate to the job for which you are applying. Let your personality and experience shine in this section of the cover letter.

Third Paragraph: Round out the letter with a positive statement or question which will trigger the reader to call you for an interview. Refer the reader to your resume to get a more detailed explanation of your qualifications.

Sincerely,

Your Name Typed

Note

• Modify your cover letter to the position for which you are applying.
• Once you think you have everything the way you want it in your cover letter, check it and proof it all over. You can say everything an employer wants to hear, but if your cover letter is loaded with spelling and grammar errors, the employer will still toss your resume and cover letter in the trash can.