The projective strategy is very self-oriented and active. The receptive strategy is world-oriented and passive. The goal is to engage both strategies in a kind of reinforcing alternation or collaboration. An analogy may help illustrate this idea. The two activities demand different states of mind.
Some people find one easy, but the other difficult to master.
Failure to step back and examine the composition produces a painting without balance or harmony, full of disconnected elements, however good the artist's application of the paint may be. A good painter paints a little, looks a little, paints a little, and so on, doing each phase comfortably and naturally until the desired result is achieved. Some people seem to have the knack of this automatically. For most, though, there is a learning process involved. Each of the two strategies must be learned, and then the two must be integrated together.