You already know that first impressions matter, which means your cover letter will need to begin with a powerful and attention grabbing introduction. But last impressions matter just as much. So before you sign off and complete your message, take advantage of every opportunity to sell yourself and make your best case to your potential employer. Make sure you wrap up your message tightly, restate your primary points, and say goodbye with style and class. Here are a few things to keep in mind as you bring your carefully crafted letter to a ringing conclusion.