Any photo cannot become interesting. It has to have an extra element and something refined to be classified as interesting. We see clouds but that cloud is exceptional which has a shape and the sun piercing through it. There are kids in a photo and there are smart kids who look appealing and good. They add their charm to a photo. Some greens are ordinary and drab and some of them are lively and favorite thus making an attractive photo. The person had to be smart enough to know the difference between ordinary and extraordinary and go for the subject and the view. Knowing all this you can be a great photographer.