A proposal is a document that clearly formulates the terms of potential cooperation, its advantages, and the expected result. In general, everything should convince the interlocutor that they really need it. A commercial proposal is sent by mail or delivered in person during a business meeting. There are areas where the proposal is one of the main sales tools. When creating a proposal, it is necessary to involve marketers, designers, copywriters and other specialists to achieve maximum results. How to do it is best described in this article.