In this article, I'll give you a few tips that your should consider with respect to your cover letter format. It always amazes me how many people truly miss their opportunity at desired jobs because they motivation letters that have sub_optimal formatting.
Make sure you choose a cover letter format that you feel most comfortable with. It should be something that could best express your personality but keeping it as formal as possible. Be wary of the details of the cover letter format. It must be clean and neat. It should provide the data directly. There is no need to be colorful or playful with the fonts.