Fill out all applicable white boxes. Blue boxes contain instructions.Explain the needs of your agency and people who will benefit from the proposed project. Sample Letter Format Grant Proposal for Foundations​​ The letter format has traditionally been used for proposals to seek funds from private foundation sources. Prepare one set of forms for each proposed funding year as well as a cumulative budget summary if applicable. 1. Proposal cover sheet. Download and complete the Proposal Cover Sheet (Word) form to provide summary information about your project. Elements of a Proposal: Templates and Samples. Use our Business Proposal to secure potential clients, outline value proposition, and convince a company to enter a business relationship with you. What is a construction proposal?