Thanks for commenting Marc.
I actually prefer the face being flatter. I don't like the recent trends towards very high contrast shading on faces - unless the light is almost directly overhead the deeply shadowed cheeks and skeletal eye sockets simply don't exist. I thought the red wasn't too bad but maybe I will redo that.
I'll try and improve my photography too - no flash was used, just the light from the window where I paint as my flat is quite dark at this time of year.