First, to begin the letter, start with a warm greeting and mention your sponsor's name. Don't jump right into the letter.Let me take this opportunity to thank you for inviting us to the grand opening of your new retail store. With great pleasure we accept the invitation. Open with a thank you for the invitation, and your confirmation that you will attend. This way, you provide the essential information first. The application process is entirely online. No items need to be mailed to USF. Fill out your FAFSA Application. If developer has an approved Water and Sewer Availability Letter, please submit it with the construction plans.