I tried this technique in my art journal, because its paper surface is so smooth and glossy it hardly keeps any color on it without any gesso or other foundations. While brushing the acrylic paint over the page it got wiped off again in the parts where it was still wet, but that created an interesting fade-out effect (in the blue stripes on the right page down).
I also tried tapping the brush onto the page to get some marks - brushing the color over the page afterwards created the fade-out effect again (in the pink color).
Here I went for a color combination like clouds or grass on earth to get a background for some nature pictures. It got a bit messy though because the pink reduced the brightness to a more brown tone. I still like the directions of the brush strokes.
Again I wanted some earthy tones, but am not so happy with the yellow pattern on top. Maybe the pattern is not determined enough or the colors just don't fit.
A nice spin-off were some old postcards I used to wipe the excess color off my brush. You can see them in the cover image of my project.
This is such an easy-to-use way to create backgrounds. I am sure I will go on experimenting with this technique. Thank you for this class, Keren!