[Leica] HELP requested, badly - serious for a change

[phamard at numericable.fr (Philippe Amard)]

All,

I just posted a photo of a tub in the mountains as a joke, but I'd now 
like to have your opinion on how to assess/measure light to take a shot 
such as the original one. <http://tinyurl.com/3y6564>

I know there are several schools.
Some will even say, not feasible in those circumstances, particularly 
with digital.

But I'd like to know from you, on or off-list how ytou would handle such 
a difficult shot.

I have lettered what I think are the main areas in terms of what should 
be seen or hidden in the picture.

This one was 100 ISO, center spot, 1/15th at 22 yellow filter on and 
processed in LR as zeroed, then grey scale, before import to PSE for 
lettering and size reduction.

All comments more welcome than ever, and suggestions desperately needed 
if I'm ever to improve.

Thanks in anticipation
Phil...x