A sponsorship proposal should also include the details of your event, such as the objectives, target audience, budget, timeline, and sponsorship packages. A sponsorship proposal should highlight the benefits of sponsoring your event, such as exposure, recognition, goodwill, and return on investment. How to Make an Attractive Sponsorship Proposal for Your EventĪ sponsorship proposal is a document that you send to potential sponsors to persuade them to support your event or activity.