First, I painted a rough outline of the image on the board (above) and did some paint mixing. He says his name is Reg by the way (and pleased to meet you, thanks). I used Alizarin Crimson for the sketch, if you're keeping score.
Then the background painting. Not sure yet how finished this part is, so I'll paint Reg first and then decide what else I need to do with the blue (Ultramarine Blue, Alizarin Crimson, Utrecht Unbleached Titanium, Payne's Gray and Titanium White).
Probably add some clouds in the mix later on.