I have not run out of ideas yet, so will continue this series. Part of the fun is sketching and dividing up a simple face into color blocks. Then there is the challenge of the backgrounds. No holds barred. Paint and collage, or both. Selecting a color palette and finally painting. There are many shapes of eyes, or noses, or faces. I like the vary them. I think variety is so much more interesting than symetrical when drawing a face.
At the end I look to see if anything else like stripes or line work that might improve it or punch it up. Sometimes I need to adjust a color, or a shape.
Here are some samples.