Make an appointment to meet with a Career Center professional to discuss your cover letters. Remember to sign your letters. Print your letters on quality bond paper. Use the same paper you used for your resume. Use a letter quality printer.
Laser printers are preferable.
Never use a dot matrix printer or send photocopied letters. Read the sample letters provided with this article. However, do not copy the sample letters to save time and energy. Write your letters yourself and know exactly what is in them. Make your work original.