You do not have to worry much about being a copycat if you do not find the most unique cover letter format in town. Just be sure that the contents of the letter have a clear and definite direction. This will bring about a good flow in the contents of the letter.
Use a Cover Letter Format Properly _ It is completely normal to find a cover letter format that can give you a jumpstart. It surely to have a template where you can easily fill out your specific information and make certain modifications on. However, keep in mind that the cover letter contains the more essential information for your job application. The cover letter format is just one aspect. Exhausting all your energy on this part may not prove fruitful in the long run. Thus, you have to be practical.