Pro Tip: If you wanna get to know a character (an oc or a character from a series, either or) better but aren’t sure how, make an aesthetic graphic for them. Moodboard, stimboard, aesthetic post, etc. it doesn’t matter, it’ll help a lot. It forces you to think about what the elements of a character are and what separates them from others, to refer to who they are without necessarily using an outright image of them. Trust me, after making aesthetic posts for like 18 separate characters in one go for an event, some who only have a couple lines, it helped me understand the characters better and be more interested in them.
If you’re worried it won’t turn out good, please don’t be; it’s ok if it didn’t make an end product you were satisfied with, just doing it as an exercise can be really helpful for getting in tune with a character, and it can be a lot of leg work but ultimately its something anyone can do. Just search for some images on Google or tumblr (try “[keyword] aesthetic”) and put them on a tumblr post, or download Pixlr or use it on the browser and dive right in. Just be sure to source your work (I beg of you) and don’t worry about it too much.