Lines and Patterns
Patterns represent uniformity and certainty, in the ideals of fine art. The same is true for photography, especially monochrome photography. A pattern is q way to draw the eye of the viewer towards various points in the photo, creating a network of focal points. If the photo has a centerpiece, even if it is a part of the patterns, your eye will immediately be drawn to it, creating even more interest in a particular image.
Lines are more direct in their approach. They immediately take you to the point of focus, acting as directional arrows in a way. While they may be any manner of congested or convoluted, they are a sharp and direct, which makes the image more visually direct as well as detailed.
If an image has both features however, it will do both take the eye of the viewer on a visual journey through the picture, as well as present some very exciting framing and composition opportunities.
When framing an image that has lines as well as patterns, always try to look for a major focal point such as where the lines converge. A very good example of this is the dual perspective that we talked about earlier. Perspectives in general always lead to a focal point. Add in some patterns in the image for more of a dramatic effect.