Get help drafting the welcome letters to the new members of your nonprofit organization with these two useful writing templates! Boost your renewal rates with a foolproof membership renewal letter!Trying to write a membership renewal letter but don't know where to start? In this article, we will describe how to write a business letter, the different parts of a business letter, give you some tips for writing a successful letter, Attached are the forms and instructions to form a Florida Limited Liability Company pursuant to Chapter 605, Florida Statutes. Keep the letter brief – not more than one page. Restate your request at the end of the letter, for example urging them to support or oppose the bill. Certificate of Membership (Sec. Portal). Certificate of Membership Dual (Sec. Portal).