More information on creative project proposals, including advice from successful Haas Scholars applicants, will be posted soon. In the meantime, keep in mind that a good creative proposal shares most elements in common with a good research proposal: a clear statement of what you hope to accomplish, why this work is needed, and specifically how and when you expect to complete it.
However, a creative proposal should also address:
How does my project relate to or build on other relevant creative expression and/or intellectual work?
How has my project evolved out of my previous creative work?
How will this project advance my creative and intellectual development?