The coat shadow adds to the intimacy of the composition and helps to make sense of the lighting decisions. The pose indicates a low, early morning light, which again reinforces the 'dreamy' demeanour of the subject.
It is difficult to tell in this photograph but there is much to do on the top lip which has only had an initial colour added. There will be an indication of a wet area but, at present, it is only the white canvas on show.
There is a little more refinement needed, also, on the bottom lip.