Thank you to "ie va" on the Museum by Sktchy app for the awesome reference photo. I have often heard that it is helpful to start a painting by making it clear to yourself what in particular about the subject matter appeals to you. That is, what is the main idea you want to get across? I was inspired to paint this one because of the interesting light pattern on her face. It made an oval on the upper 2/3 of the portrait. So I wanted to keep that light oval emphasized in the painting. In the reference, the background is white, but I darkened it in the painting so that the oval is the lightest part. Here's what the final painting looks like when reduced to 5 values:
I think I achieved my main aim for this portrait, so I'm happy with it. I also think it's a pretty good likeness.
Here is a series of in-betweens. Those middle two actually should appear to have white, unpainted backgrounds--not sure why my camera made them so blue. The last one is correct in its blueness.