I've just magnified this. When viewed on the whole page it's cropped it a little at the bottom. It looks better with less shoulder/upper arm. You can concentrate on the arresting face. However, to my humble, untrained eye this is quite something. Amazing.
I think the face should be just a little lighter to bring out the beautiful details in this wonderful artwork. It doesn't look as good in the smaller version, but enlarging it helps. THANK YOU for posting this for all of us to enjoy, very nice.