Yesterday I worked on the under painting.
I decided to use watercolor for the underpainting because I already had the materials.
I would have had to go out to buy the right color(s) of pastel if I went with it.
As you can see I have an overall pink wash.
Then I went back in and added yellow to the sky, fencepost caps, and her scarf.
The next step will be to spray it with fixative and then start painting with more watercolor and then gouache for opaque detail.
I usually go back in at the end and do some color outlining.