Karin:
I did the underpainting for this one in Mars Yellow. Mixed up the standard 9 values adding white on the light end and raw sienna on the dark end. Got the values just right using mostly four of them as satin is in a 4 value range, then mixed an orange, in four values, a blue in four values, and a pink in four values. Used them plus white to detail the dress over the underpainting. This wasn't like a shiny dress satin, but was slightly matte.
Thanks for the interest.
