I did a few more hours work on this today and then some more joyous time trying to get an accurate image of it to upload here! There is a slight cast shadow across the top from the scan and the highlights aren't quite as blobby as they look here, apart from that it's about right.
I re-adjusted the patterning on the hat and it looks more accurate now. I spent quite some time on her hair, using Light Yellow Ochre, Ivory, Cinnamon, Burnt Ochre, Bistre, Raw Umber, Burnt Sienna. Haven't quite finished the right side of the hair yet, my eyes were starting to cross so I had to stop for today! I also did some more on the skin tones using Light Flesh, Medium Flesh and Prismacolor Rosy Beige, Peach Beige and Peach too as the Polychromos range is a bit short on these lighter shades.
I think I have her expression about right so I don't want to do too much more on her face, just slight tweaking and blending in. Did I hear someone say 'what about the background'? Er.....nope, must be hearing things! Haven't messed up yet but that could change. No.....come on, stay positive Janet!