Pattern is an underlying structure that organizes surfaces or structures in a consistent, regular manner. Pattern can be described as a repeating unit of shape or form, but it can also be thought of as the "skeleton" that organizes the parts of a composition.Pattern exists in nature as well as in designed objects; it is useful to look at the parallels. A Harvard biologist named Peter S. Stevens has published a book entitled "Patterns in Nature" in which he claims that there are only a finite number of ways that patterns can be structured. He starts with the idea of a grid as the foundation for any structure or image. He presents a set of ways in which the points of a grid can be connected. These modes of connection become classes of pattern, which he claims can be seen in any situation, in nature and in made images, and from the microscopic to the cosmic scale.The modes he describes include the following which are described here in terms of examples from nature. However, each of these modes can also be seen in examples of designed objects and works of art: check my portfolio at - https://www.behance.net/swapniljain1975