How to develop a plot for a short story?

A story about a guy who gets 3 wishes and reincarnates in Legend of Korra as an earthbender prodigy. I always wanted to write fanfiction and the idea for this story kept popping up in my head so here we are. My main goal right now is to upload a chapter at least once a week and that becomes a lot harder when English isn't my first language. Besides that please be gentle with me as actually posting this took a lot of courage for me. I own nothing besides the OC.

WARNING my stories generally lack spirit i write for fun and to free my head from this particular plot. Expect inconsistency bullshit power ups and messed up logic and also don't expect good grammar.

A wealth of varied sexual histories. The stories are unrelated. Support me in Patreon

When a woman dies in the ocean with regret and hate, she becomes a siren to mesmerize men to sink their ships. When a woman dies in the snow in despair, she becomes a yuki-onna to freeze anyone who has the guts to look at her. When a raped woman dies with the desire for revenge in her heart, she becomes a succubus to suffer men and to be fed from them. This is my story; written for those who take the hard way instead of accepting death and rely on angels to bring justice. *Mature content *No underage character *No incest *No love, just lust

Having to have died an unfortunate death, Ben Li transmigrates into the body of Wang Xie; a character which he had written as one of the antagonist of his first novel since he was fifteen. Having to live another life, Ben Li must struggle with Wang Xie's horrible reputation, his made up Chuunibyou world and the life threatening destiny with the protagonist of his first novel. Will Ben Li grovel in frustration and anger under the heaven's will; or will he ascend to become the rightful God of his own written world?