I love the Fall season and am using it to learn new techniques to add color. This is called wet on wet.
When our youngest son was a preteen, he learned about fractals. These are mathematical concepts that can describe a design. A fractal is a never-ending pattern. Fractals are infinitely complex patterns that are self-similar across different scales. This concept helps to explain why we can say that this is a maple leaf, although every maple leaf is different. The design or pattern is the same for every maple leaf. I see the hand of the Creator in this. He did not make a chaotic world for us. It is a complex world, but the natural world has order and design. Life would be impossible in chaos.