When you stand under a tree remember to look up. You might be surprised to see the pattern the branches make and how the leaves don’t always overlap so they can absorb as much light as possible. Spreading out towards the light (phototropism) is where plants bent their stems to move towards the light. Look at the different shaped trees make, depending on the species. Some even have nicknames. Ash trees are supposed to have branches like witches fingers. This was one of my paintings from about twenty years ago.