We built this barn thirty years ago for our sheep and horses. Last October we moved to a new house (no barn). I have lots of photos of the old place and I'd like to paint this view from the front porch. I did a quick "sketch" for the values but am unsure how to capture the beautiful distant fall colors.and was hoping for some advice. I've included the reference photo.

I know I have the tree slope wrong. I was mostly interested in the barn and playing around with fall colors on the distant hill.