Springer Spaniels portrait update

Today I have started on the detail on my current graphite pencil portrait of 3 Springer Spaniels. I do one small area to completion at a time, then move onto another area, and I have started on the black and white Springer, Smokey. I think Spaniel's ears are one of their most distinctive features, but also the one I find hardest to draw. The small part of Smokey's ear I completed today took me an hour! Here is the portrait so far:


And here is a close-up: