Henri Cartier Bresson is well know for the concept of “the decisive moment”.
My Picture of the month the other month (Sept) is a good example of this.
![Dancing in Air](https://brown-family.org.uk/wp-content/uploads/2013/09/Dance-300x211.jpg)
Where people are involved, there is often a particular moment that makes the image stronger.
![Photo Walk](https://brown-family.org.uk/wp-content/uploads/2013/06/PhotoWalk-240x300.jpg)
Try to anticipate the moment where the composition is strongest and capture that moment. You will capture stronger images for it.