Re: how does one create a proposal for public sculpture?
I would like to help but I'm embarrased to say how much time and effort I have put into proposals for competitions in public works, none of which succeeded in winning me a commission.
The balance of the equation is how often I have won private commissions, and a couple of public ones, with a few words and a handshake, and occaisionally a sketch.
From my biased experience a visually glitzy proposal ( which is not my forte )with a poorly concieved idea will trump a well thought out but less "professional " looking one.
Most requests for proposals include a list of required elements. If you are looking at creating a non-requested proposal, then you may want to search through some requests and see what they are asking for.