Image #1 shows the very beginning of the self-portrait.  Painted blocks of light and dark using yellow and bronze tones map out surface contours and indicate facial features, hair and neck. 

Image #2 illustrates a half way point.  New colours are introduced in order to emphasise skin tone and create further definition particularly around the eyes and nose. 

Image #3 is the finished portrait.  The skin tone is softened, the nose and mouth further defined and the hair painted blue in order to highlight the face.  In addition to the practicalities of mapping the contours of the face, there is a requirement to almost work from the inside out in order to draw out what lies within.  In this case, an attempt to register the juxtaposed emotions of strength and vulnerability in the eyes, mouth and angle of the head.