Oil pastel is built up and deepened and developed over a simple theme of blue face and white shirt.  The black eyebrow white eyebrow, black eye white eye, black nostril white nostril is the constant that made finishing this work most difficult.  Black and white being very powerful and their use as icons of face features meant that the color had to work hard to compete, otherwise the picture would fail.  

This paitre failed so many times over the course of its development.  It is one of the oil pastels where the paper really took a beating.