Take a number of shots using lines to flatten the pictorial space. To avoid the effects of perspective, the sensor/film plane should be parallel to the subject and you may like to try a high viewpoint (i.e. looking down). Modern architecture offers strong lines and dynamic diagonals, and zooming in can help to create simpler, more abstract compositions
These stairs create an abstract composition. The lines are horizontal giving a sense peace, tranquility. Although when you climb on them something is changing: perspective. The lack of perspective in the bottom and top. in the picture is giving impression that the lines continue in the margins creating interesting space.
Review your shots from both parts of Exercise 1.3. How do the different lines relate to the frame? There’s an important difference from the point exercises: a line can leave the frame. For perpendicular lines this doesn’t seem to disrupt the composition too much, but for perspective lines the eye travels quickly along the diagonal and straight out of the picture. It feels uncomfortable because the eye seems to have no way back into the picture except the point that it started from. So for photographs containing strong perspective lines or ‘leading lines’, it’s important that they lead somewhere within the frame.
The lines from first exercise both lead to people, the eye is directed to some point in the background or if subject is also in the foreground it moves between two points. In the above picture the eye is simply scanning from left to right but in the first exercise the eye moves up and down.