This exercise aims to stimulate and practice the communication between both hemispheres of the brain, thereby increasing the "processing power" of your conscious activity.
Place the above picture about 1 meter in front of you. Stretch your hand forward so that one of your fingers is between and underneath circles.
Change focus to the tip of your finger and overlook the circles. You should see 4 circles. Then concentrate and aim to overlap the middle two to see one circle with a white cross on top of your finger, in the middle between the two. Seeing the cross is the evidence, that the left hemisphere of the brain (hard-wired to the right eye) is communicating with the right hemisphere (hard-wired to the left eye).
This exercise turns out to be extremely beneficial: 5 minutes of it seems to double the size of your electro-photonic aura.
The cross will initially float and seem unstable. Experiment with the distance from your finger to your eyes to achieve a perfect cross. You gain a significant benefit after 3-5 minutes of maintaining a perfectly balanced cross, preferably without blinking, but a magic duration seems to be 45 minutes of concentration at the time, which is said to make a REAL difference to your conscious abilities and awareness.
In my experience it is best to start with a minute or two and gradually increase the time every week. Short and intensive concentration seems to be better than a longer one, interrupted by the lack of skill.
Gradually, with practice you should be able to achieve and maintain the cross without the finger. While maintaining the cross try to become aware of the other 2 circles as well as everything around using your peripheral vision. You should see neon-like "aura" colors around the colored circles above with your peripheral vision. When you can analyze surroundings using your peripheral vision, without loosing the cross (and the concentration), you are also ready to see and read auras.
One diameter in the cross seems usually "in front" of the other. This means, that one of your brain hemispheres seems to dominate the other. Males usually see the horizontal diameter above (left hemisphere dominates) females usually see the vertical diameter above (right hemisphere dominates).
Try to get the "hidden" diameter in front as much as possible, by concentrating, on demand. The final level of concentration is to achieve and maintain a perfectly balanced cross with all four arms of similar intensity, thereby achieving a perfect balance between activity of both brain hemispheres. Many people experience amazing effects here. Firstly, concentration gets much deeper. Secondly, after 2-3 minutes you seem like loosing sight, with bright background becoming dark purple or pink. Your sensitivity and awareness greatly increase.