Icons are generally paintings, sculptures, and various other forms of artworks that are represented as a symbolism for religions. The types of icons may vary in different religions, cultures, and beliefs.
Icons are believed by cultures, religions, and beliefs to be either portals to different worlds or to be used as a means of communication with whoever or whatever the icon symbolizes. These portals are accessed by meditating in front of or near an icon and astrally projecting one's spirit through the icon acting as the gateway-portal to another world. Upon entering through the portal one would search and find the world that represents him or her in which the person may reign over as a deity. To return to the physical body one would have the will to return the the portal with the intent of getting back to their physical body. Others believe that when meditating on the icons one can call upon whom or what the icon symbolizes to represent. By meditating one the icon the actual being symbolized will speak through the icon. This also has been believed to to another portal to visit the place where the being resides. An example of this is to meditate on a statue of Zeus and project through the icon to reach Mount Olympus to communicate to Zeus. Communications are advised to not be of petty matter, but matters of (great) importance.
The stars throughout the galaxy are also believed to be portals to individual galaxies accessed through the gateway portals linked to each star. Each star represents each a different individual galaxy. For examplethe constellation Canis Majoris contains the Sirius stars Sirius A and Sirius B. Star A has a portal and so does star B. The galaxy reached through Serious A is completely different to that of the reached through Sirius B. Just like with the icon portals, the portal corral star is accessed my astrally projecting through the star. And the same goal is applied: find a world to rule over.
Now what you do in your world, once found, is use to you. After all, you are the ruler.