The idea for my process is to have a clear set of ideas, or rules, at the start and to follow and see where that leads me with the painting. I actually started this idea, still using a grid (though as I was playing around I didn't strictly follow the grid yet), with dots:
First, I photocopied a vintage photograph making it larger and easier to work from. I ended up doing a color copy as it made these lovely greenish-blue colors rather than the sepia tones in the original photograph. Then, once I knew what sort of grid I would use on the panel I drew it out on the copied photograph and then on the panel. I selected particular paints to use and began one square at a time never painting squares next to each other in single painting sessions.
Each time I started a new group the paints used were mixed slightly differently so that each square was like its own little painting:
And here is, as you saw in the previous post, the final painting:
The first of these paintings, I had to start with it turned upside down to stop myself from moving from one square to the next automatically. Over time, I was used to it and could paint with it upright.
I still need to finish the dot painting, but I have many more ideas for these grid paintings including trying it with landscape, still life, different ways to try out the portraits, ... Just need more time...