Sketch for story idea Picture

This is a sketch of a manga I am dreaming of starting. I just need the time and motivation to start it. It is based off of a character I might create later on named Luna (or Mira, Astra something the name of a star of moon). The manga is based off of a school for mythological creatures where it centers around a boy who is a bastard son of a famous demon dealing with bullying and shame. I will tell more of my story somewhere else but please give me any advice on things I can focus on for character sheets/manga
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