The Collin College Student Handbook is for information only and is not intended as a contract, expressed or implied. The document provides a sample format for a formal letter with a carbon copy (Cc) notation.A formal letter for a membership typically follows a professional format and includes specific information related to the membership application or request. Proof your letter for typos, punctuation, spelling and grammar mistakes. Remind members why they belong. Step 1: Follow format Follow a proper letter format when you write your letter. Begin your formal letter with your contact information aligned to the left margin. Pay property taxes on time. Property Tax Statements are mailed out in October, and are due upon receipt. CVE 26, SANGAMMON (F), Capt.