Sometimes you see a great image opportunity but your gut says it could be better; it's instances like that where patience pays off. I like to "pre-visualize" the elements of the scene I'm photographing and then wait for all the pieces to come together. Other times I orchestrate the scene and place people where I want them. But the best images happen organically, like the samples posted here.
By being observant to what is happening naturally, and waiting for the right moment, the results can be magical.