Next stages of Figures in an Interior

This next images shows the underpainting of burnt sienna, yellow ochre and white. I wanted warm undercolours because it's going to have a lot of areas of skin plus the colours of the clothing are pinks and purples. Maybe I should have used green as the underpainting colour because I've since read in a book called "painting portraits" by Rosalind Cuthbert that green was primarily used because it was a

contrast colour to the warm tones on top, plus it was able to effectivly portray areas of veins, especially on the hands.