I have finished the dog portrait! I think it turned out well. I’m glad I took the time to really look at the shading and fill out a few more areas. I think the nose, eyes and mouth are much better.
I can always ‘feel’ when it is done and usually have someone else look at it to make sure I have captured the subject. In looking at the photo, I can see areas of shading that may be slightly different, etc., but the essence is there. It is very important not to overwork it once you feel you have a good finished drawing.