@Shadowghoul19692 Hey, there..
Well to stat off, for the story ideas. I've honestly used imagery as a foundation. Using platforms like Pinterest and gaining the imagery of what sort of story I want to convey with simple ideas and then further elaborating them onto a listing system. So for example, my avatar x mha fanfiction. I browsed both images of both fiction sources. Such as Jake sully, and fanart, on top of fanart and ideologies of the mha characters for how they could interconnect and what their tones, atmosphere and story telling script would sound like or at least resemble. I think if you'd connect the imagery of the themes together in smart ways such as the training of a son(Endeavor towards his kids, specifically Shoto Todoroki), and Jake Sully's training under the navi culture. Both different in world's but similar in hardships and willpower to achieve, for Jake the trust and embodiment of what it means to be a navi, also represented with my OC Zen, and for Shoto the same can be said for his path to becoming a hero. Zen lost his family, while Shoto and other character's are also struggling within their chaotically dystopian world of quirks. Zen offer's them the stability while the world of mha has literally brought instability to his life as well. Those sorts of deep analysis' are necessary to convey and portray a good story foundation.