Proposal Summary and Approval Form. 1. Include the full Project Title.You can divide a proposal letter into three main sections, the problem, its solution and your qualifications for solving the issue. In this article, we discuss how to write a business proposal letter and we offer sample letters and templates you can use as a guide. Here are a few example proposal letters to inspire you as you create your own. Proposer shall submit a proposed Project Schedule with the major milestones, activities, and timing of deliverables for the Scope of Work described in the RFP. Use our free proposal templates to make sure your proposal includes everything it needs. Explain your proposed approach and how it will effectively address the identified problem or opportunity. You can always change it later if it doesn't work out. Occurring in the Clark Creek watershed.