While I am thoughtful about the colours I choose to use, I am quite random about their placement. I am interested in the colour relationships. How one looks next to the other. The color mixing when a blue is painted over an orange.
I understand these colors and can usually predict the outcome, but there are always surprises.
I use plastic film to create textures while I am layering the colour. Different films yield different results. Waiting for the paint to dry enough so that I may remove it is torture.
It's messy at this point and isn't very visually stimulating. Sometimes it is just downright ugly!
However, there is always another day.