Get to the point quickly. Tell about your project or organization at the top of the letter, then describe why the project or program is needed. Be sure to add why your organization is qualified to carry out the work. If it's a new organization, talk about the relevant professional experience you and other staff bring to the project. Don't overstate your case and don't overuse adjectives and superlatives.
Exaggeration is a no-win game.
Keep it business-like and to the point. It's fine to include a brochure, but don't attach every promotion piece you've ever written. These suggestions hold for all fundraising letters, but different types of letters require fine tuning. Business Solicitations Small businesses can be valuable supporters, especially if you or your organization is a customer. If you are, be sure to mention it in the letter.