This all looks a bit of a mess, but I think I'm learning that the best and most organic ideas often sprout from this kind of mess.
Doing these little wild thumbnails seems like quite a natural part of the process to me.
Can you spot Arnie?
An offended spotty cat?
(It may help to click to enlarge)
An erumpent green rump?
Some stinky carthamus pink?
The carthamus pink I got in a sale at Herrings, the art shop in my home town Dorchester. The tube looks like it's from at least as long ago as the seventies. And heavens it's stinky stuff.