Further progress..

I had initially tried to use grey for the hair, as with the figure in my sketchbook, but it really doesn’t look the same here, it just looks like a bit of a mess. So, I removed that, leaving the outline of the figure’s head as well as all of the highlight and shading outlines, which still allows a sense of fullness to remain while incorporating the loose, sketchy feel that I wanted.

For the shading of the body, I tried to replicate the effect of light blue marker pen by turning down the flow on the brush, which I think worked relatively well, and then outlined each shadow with a much thinner, darker line.

I’m quite happy with how this is looking. It’s messy in an intentional way.