It was time to try a different view. I set up the mirror for a 3/4 view, and worked quite quickly, this time on a smooth board. Time spent was again under an hour. I was getting somewhat more accurate with proportion, partly just through repeated looking and intense focus – which you can definitely see in the expression. Peering out of the corner of your eyes at yourself can become very tiresome. It also turns out that getting your eyes to look as if they are pointing in the same direction can be really difficult.
From this one I took that the smooth board provides a really good surface for working the pastels, even those which are relatively hard like the Contes.