The letter format should use an appealing font. Maintain uniformity of font and size all through the body of the letter. At the same time, you should create headlines and titles to seem different by simply increasing the font size slightly. Capital or bold letters should be done with care so that reading continues to be smooth. The art of sales writing is time consuming. You could refer to a few sample letters to see how they have made good use of fonts to give a perfect finish.
Of course, you will eventually realize that even if you do not get that frenzy over the cover letter format, you will still have to pick one template to start on among many choices. Thus, it pays to know some essential points that will help in making a good cover letter.