I tried to thread paint the snow on the mountains which did not work so I attached some "snow" fabric and will probably paint in the bottom edges and shadows.
I had fun adding details to the wood section of the covered bridge and just have to add the inside shadow that goes across the road.
My tree had an accident so I will have to either add to the branch that shredded off or try to thread paint it. I'm un-decided about how much snow, if any, to add to the tree.
Next - work out the tree placements on the right side of the bridge. That's a lot of snow there.