I get really into an idea and it's just stuck in my head until I can let it out. I like to explore how characters would respond to certain situation (forced to work with the enemy, AUs are fascinating and I enjoy reading people's interpretations) or why they are the way they are or nature vs nurture (great characters for this for me are Finn, Hux, & Kylo).

If it turns out okay, I may post it and it's great if other people enjoy it, too. Though, most of the time I write little snippets in a word doc or on my phone that usually are only read by me.