I think what is annoying me is the colour I have on the underside of the cumulus clouds. Every dial I have is tweaked to the blue side of grey, and yet I am getting a reddish colour. Even tweaking the colour perspective has no effect.

It's basically the same problem I was having when I was trying to get bryce to render me a grey scale monochrome, but at least I could remedy that in postwork, don't think I can with this one.

Plus of course, being me, I now want to add details, put someone or something in the cave etc.

The greatest part of wisdom is learning to develop  the ineffable genius of extracting the "neither here nor there" out of any situation...."