Leading Lines
Leading lines is a famous photography technique used all over the world. The idea of leading lines is to lead the viewers eye down a object to get to a focal point. Naturally the eye will follow any straight, curved or even jagged line, so by putting the main object at the end of the line it will emphasis the point. To have a good leading line you must have it contrast well with the background.
Example 1
In this picture their is a few leading lines that all lead your eye to a focal point. In this specific picture the focal point is the building at the end of each line. The two main leading lines in this photo are the grass edge and the leading line on the edge of the gutter.
Example 2
In this example of the leading line technique, your eye gets drawn to the focal point, being the small green tree. The viewers eye is led down the mortar cracks in the bricks.