I would never have thought that inks would have worked on canvas, but they do, and here is the result. I was shown the result, so I tried it out the day before my demo, and here’s the result. They are more effective in real life, as the ink has quite a gloss on it.
I dropped a few colours of ink onto the small canvas board, then tipped the board in various directions to make the ink move around. The colours I used are orange, red and magenta, then I added some blue near the orange to make some greys. l dabbed with a brush a bit, just for encouragement for the inky areas to join and mingle. When the canvas was fully covered, I put a piece of Gladwrap over it.
Once the Gladwrap was on, I could see if the colours were strong enough, and where required I dripped on a little more ink and put the Gladwrap back over it. Then I moved the wrinkles in the Gladwrap to an arrangement that suited me, and left it to dry. It takes a few hours but not as long as I had thought, given that it is a cold winter here.
The green one is the one I did while demonstrating at The Art Scene. I used some Burnt Sienna near the blue ( in terms of colour theory it counts as an orange) but I wished I had used more. When I get time I will try this technique on top of it with white ink only, and not covering the whole canvas. When that is dry I will do the blues and greens again, but with more Burnt Sienna.