The lesson
Open a bid with an edge-to-edge rendering of the finished project and a title block naming who leads it.
A landscape cover with a teal band, a white title area, then a wide aerial rendering of the stadium with covered grandstand, green field and trees. Left: "Memorial Stadium Redevelopment Proposal". Right, small: "Submitted May 2023 to the City of Seattle and Seattle Public Schools", then large and bold: "A Community Vision Led By The One Roof Partnership".
Don't copy the stadium or the specific submission details. Keep a rendering that dominates the page, a plain title, and the recipient and date stated on the cover.