The first part of this exercise is to take several shots using lines to give a sense of depth (appear three-dimensional). A diagonal line into or across the image leads your eye along it and potentially out of the image. This commonly occurs when looking down paths or roads, but can also be simulated by a line of objects such as trees.
All these pictures are comfortable to view in contrast with the one shown below which leaves you subconsciously searching for something for your eye to rest on.
The second part of this exercise is to take a number of shots to flatten the pictorial space, that is, to make an apparent two-dimensional image. One of the ways to do this is to look down on a subject, the other is to be parallel to it.
I found finding images for this difficult. One problem is that my eye is used to looking for texture and shadow to create a 3D effect, the other was purely practical, in that the area I live in has no tall buildings, and very little modern architecture to find obvious examples.
None of these images gives a very clear representation of a 2D pattern either because of cast shadows or reflections. The perpendicular or horizontal lines do not act to lead the eye out of the image, but simply make for a ‘pattern’.
This is an exercise I will revisit and look for alternative images that give a more absolute 2D, patterned effect, possibly following a visit to a larger metropolis.