Pencil drawing this weeks model

We all thought the model was Scandinavian this week, turned out she was from Belgium, I was surprised that she started the two hour session with a smile and a gaze that looked straight out at us , blimey she won't hold that for two hours, I thought, but she did, and I think the steely determination shows.
One student wondered how to paint the colour of her hair,
"You will have to ask my hairdresser" she helpfully quipped, before adding
"It has highlights" ... bringing up the difficult problem of colour versus tone