Last Friday, I shared the first of a series of Idealized Paintings that I've been playing with (with which I've been playing). I discovered the technique in Zoltan Szabo's 70 Favorite Watercolor Techniques, though I think it's one you'll recognize. It's difficult to find instruction for, at least under the term 'Idealized', so there may well be a different term for it.
I changed brushes from Friday's attempt, using a 1 inch flat instead of a size 16 round. This made it easier to capture the broad shapes so essential to the technique.
No reference photo was used. Rather than starting with a fixed idea of the trees, I painted the shapes, and then found the trees among them.