In order to write a revealing cover letter, you will need to freshen up your resume. Try re-writing it. Change your format. The most common form is chronological. Remove all the empty words and vague phrases. Remove all clichŽs. Highlight your achievements not just the duties you performed in past jobs. Try to quantify your achievements. Create a clear career summary. This will help the employer to see how you will be able to fit in and help prospective employers. Fill in all of the gaps. Don't wait until the interview to clear it up. Simplicity works best. Proof-read and double check. Make sure that your contact information is on the resume. Make sure that it is correct.