I'm still experimenting on small canvases, applying the acrylic paint with a palette knife. After my first red, yellow and white painting, I tried another one today. First I applied white and parchment in the center third of the canvas, blending them with the knife.
Next, I applied cadmium yellow light to the top section, and then alizarin crimson along the bottom. This formed my background grid. Then I put enough pyrole red on the knife to make broad sweeps up from the crimson toward the yellow.
I was careful not to have too much blending, keeping the red mostly separate from the white and yellow. Then I decided I needed more white, and added some, again without mixing it too much into the color underneath.
I used the knife to do a little blending and scraping, but not too much. Then I drew lines in cobalt green to add texture and contrast.
Now I have too of these red, white and yellow canvases. Tomorrow I'll decide what to do next with them.