Hello I really like your art. Especially the stories you write for your OCs. It feels refreshing even though the OCs belong to an already pre-existing universe.
Do you have any advice on how to write interesting stories or backstories for OCs?
Hello! Apologies for the late reply but I've been pondering for a while about how to answer your question without rambling lol
I'd say, you should start with a theme/concept that you're interested in, do your research about that topic, and apply it to your OCs. You can think of it like character tropes, but one thing that I learned about tropes is that you shouldn't stop at the trope itself when writing your character.
You should expand that trope, and take your own spin on it. The trope is the starting point, and then you should put your OCs in Situations and other Problems, and really ask yourself "what would [this OC] think/do/say in this situation?" and then ask yourself again "Is that really right for this character?"
The "what would [the character] THINK about/in this situation" question is especially important, because you want to really establish their personality, worldview, and thought process. Those should inform how they take actions and speak to various people in various settings.
I hope that helps!