It was for Amelia Gregory's interview with the FABULOUS Bourgeois & Maurice!
This is the sketch
And this is the final which was painted with Acryla gouache (Pure red + Carmine + Burnt Sienna + Ash Rose + Light Magenta + Shell Pink + Jet Black) on watercolor paper,
then I scanned it and manipulated the color digitally
Researching for this illustration was fun since there's a lot of material to look at; here's my favorite video of Bourgeois & Maurice: