The God Ometecuhtli/Omecihuatl created itself. He made sure the world had opposites and also created the directions which were also Gods. The Aztecs thought the directions like North and South were very important because they thought their city was in the centre of the world.
The Gods Huizilopochtli (south), Quetzalcoatl (east), Tezcatlipoca(west), and Xipe Totec (north) then created water and other gods.
But the Gods ran into a problem with the sea monster Cipactli which ate their creations. But the four gods got rid of Cipactli in the end.
The gods then created the five different suns. First the Jaguar Sun (Nahui Ocelotl), then Wind Sun (Nahui Ehecatl), Rain Sun (Nahui Quiahuitl), Water Sun (Nahui Atl) and the Earthquake Sun.