Here is a cool interview with YA author Alice Kova. She explains how she came up with the world, plot and characters, what came first, and why she chose to self-publish. An excerpt:
"The characters came first. Air Awakens is a very character-driven story and a lot of the conflict centers around Vhalla deciding and discovering who she is as a person. When I sat down to write Air Awakens I said to myself, “You can have the best world ever crafted, but if people hate the characters they just won’t care about it.” I don’t know if this was/is true or not, but I like to think it worked out overall for the story."
"The characters came first. Air Awakens is a very character-driven story and a lot of the conflict centers around Vhalla deciding and discovering who she is as a person. When I sat down to write Air Awakens I said to myself, “You can have the best world ever crafted, but if people hate the characters they just won’t care about it.” I don’t know if this was/is true or not, but I like to think it worked out overall for the story."