Well. Here is a painting representing two faces in profile. I painted many works like this. Every time I try to give an expression and a particular intensity to the face. The faces are drawn with a single contour line. Nonetheless, I wish they had a particular, intense expression.
I prefer strong colors in this series of works. But that does not mean that I can not paint a face of this series with others and more calm shades. When I draw on paper, before making a painting on canvas, very often I use pastel shades.