An outline for a proposal is constructed in the following way: The proposal is a short document outlining what the proposal is all about. For example, if you are writing a thesis, the proposal is the document that explains the content of the thesis, what research will be done to write the thesis, and what the problem is that you are attempting to solve but writing the thesis. The proposal is possibly one of the most important parts of writing a thesis. If the proposal is not written correctly, your proposal will be rejected.