Thanks for the additional comments ! I am not getting notified for some reason, so sorry for the delay in replying! The light was a window light from behind and there was some light from the next room.
Here is the original so you can see that much of the 'light' was painted in and I used shadow/highlights and curves to bring out the shadow detail before painting.
Thanks again for your comments and interest in my work! http://susilawsonphotography.biz