Need ideas

Hey i need ideas were to head my general idea is to have harry a complete sissy by the end of the school year. Have Bellatrix come and claim Professor Aurora Sinistra and inturn also claim harry as her sissy servent. May Voldemort is defeated but Bellatrix takes over. Or does Voldemort win? How fast should harry change. Ect...

I plan on writing a new chapter in two to three weeks