The objective was to make an interesting colourfield, by playing with contrasting and often complementary colours, and still trying to maintain the facial expressions.
I tried to have the complementary colours (red vs. green) in the front area, so it would attract attention.
I also tried to spread colours over the page: if there is yellow at the frontal face, it should also appear on the other side. But as I was painting contre-jour (I was looking at the non-lighted side of the face) it was difficult to find the proper spot and amount.
Acrylic 40x70cm, took me about an hour to make.