Not too much is it? It's very prliminary ... but I have the nearly complete image in my mind. Curiously, it's three dimensional in black & white and I can rotate it with three degrees of freedom to pick the best "shot".
Undoubtedly, this will change & develop as I "get into" the work (it always does) ... but you gotta' start somewhere. I always start in the wrong place. However, the right place is not toooooo... far away.