Hi Rhod,
Thanks! I like your use of texture and sense of light, it reminds me of a friend's "quantum painting method", and I am intrigued by using a tiddlywiki to track a painting in progress.
I have a lot of my spur-of-the moment landscape photography up on Instagram:
https://www.instagram.com/jfontany/And my more technical experiments are on Art Station:
https://www.artstation.com/joshuafontanyLet me think on your situation, I might be able to come up with a good workflow for you without being too technical.
I would start with Bob.exe, as it bundles the node-setup "behind the scenes":
https://github.com/OokTech/TW5-BobEXE/releasesBest,
Joshua F