Arawai is a harvest goddess, associated with fertility, plants, abundance, and the wild lands. The Sovereign of Life and Love is revered by rangers, druids, farmers, and sailors. Her brother is one of the Dark Six, the Devourer, who represents the raw destructive power of nature - hurricanes, famines, pestilence, and so on. According to legend, she was forcibly taken by her brother and made to spawn the Fury, a dreadful monster and another of the dark six, who is herself the mother of madness, extremes, vengeance, and impassioned anger. This act, known as the Schism, began the war among the sovereigns. In that context, the painting's meaning is somber: that war and suffering are inseparable from life.
Aureon is the pantheon head of the Sovereign Host. He is a god of knowledge, and writing, including both the laws of magic and the laws of society. He represents the transmission of knowledge and reason. Neither good nor evil, Aureon empowers any who would take the time to learn. The Esoteric Order of Aureon is a prominent adventuring society within the city. This painting seems to be abstract, a likely reference to a prayer to Aureon: 'As above, so below', meaning that society should seek to mimic the perfect celestial order of magic.
Olladra is the Sovereign of Feast and Fortune. She's associated with healing, luck, pride, plenty, and feasting, as well as hedonism and hedonists in general. This piece is beautiful for it's cultural authenticity, representing a little known vision of hedonism and plenty from the most barren place on Eberron.