During my photography workshops I always mention that to take an interesting photo requires certain skills. A very important one is to have an eye for details, color and structure. A good exercise is to look at patterns and details in nature. You can go to a forest or in my case a mountain field with lots of rocks.
I just looked at pattern and details on rocks and little stones. Before you know it you get sucked in all the nice color contrasts and then the goal is to focus on a nice frame.
Here are some examples of my study of nature patterns. All taken with a Canon 5DMII – Sigma 150 macro lens and a tripod.