Here is where I ended up today after about another 1 1/2 hrs. I got there at about 1:30, even though I had wanted to start at noon, when the sun would be brighter on the barn roof.
I was able to put in the cupola, telephone poles, wires and cows, I was proud of getting the wires in by "drawing" them with my pallet knife.
Here is where I started today, I struggled with the barn, silo and sky, not getting the proper shade on the barn roof. The slate of the roof reflects the light in a complex way, and a chunk of grey just doesn't do it. What does? I have no idea! In this picture you can see the general brightness of the roof, by 2:30 or so it's completely different.
Maybe I should have gone with the roof in shadow, maybe that's another painting.