A killer proposal has 3 key features that make it effective. First of all, the written content must demonstrate an understanding of the client’s requests. After all, it’s all about the client and how your product or service facilitates positive outcomes for them. The proposal should also have a thematic strategy. Develop a strategy that answers the client’s requirements fully without adding unnecessary content. Finally, a killer proposal has a gleaming design. Typefaces, font sizes, colors, pagination, graphics, and other formatting elements should be consistent throughout your document.