Reflections on landscape painting

When we paint a lnandscape on location, what we do ? We first paint the sky. Then we come to mid or fore-ground . We look at the tree and paint it. Then we look at the house on the left and paint it . Then we move to a car parked on the road and paint it and so on. This way we complete our landscape. In this process we are constantly shifting our attention from one object to another, from one focal point to another. We do not paint the totality but paint several focal ponits. Actually there should be only one focal point in a picutre. When we look at the tree we don't notice the branches . We don't see the details unless we want to. It is the totality that we should paint and not different objects individually.
What do you think?