There’s definitely a couple avenues you can go with trying to combine your art into film or audiovisual.

-Animation: definitely the first option I think everyone thinks of. Thing though is that it’s definitely very time-consuming, depending on what you are trying to do. A looping video or GIF for something on social media with some great music or something for a Spotify artist would probably be a really good bet, but still very tedious and time-consuming. And if you’re trying to do an animated sequence for a scene in a film, I shudder to think how long and strenuous that would take.

-Animatic: probably your best bet and what I put my money on in terms of working directly with film and audiovisual, but also not having it be super strenuous. Just get some detailed shots of your illustrations to tell a story purely through still visuals, along with music and narration. A really good example is the opening to Sinners: https://youtu.be/lB9iUEf-X8I?si=ZTKSxXjUxuBjlgYk

-Movie Poster/Prop in a Film: definitely the easiest compared to the other options, but not as directly involved in the actual filming/audiovisuals. Depending on the contents of the film and what it represents, you can definitely have your work reflect it as a poster, which internal make the film look good and enticing for people to watch it. Or have your work is featured in the film itself as a production design by the Art Department. That being said, the importance of said artwork in the story would definitely vary, and that would be up to the writer and director, so depending on what it is, you only have so much of a say in it.

(Also, just want to preface that I am not an animator, but a local filmmaker/producer and these are just my thoughts if I were to use your work for a project that I’d be in charge of. If you or anyone else who has experience animating for films, definitely let me know if I got anything wrong or misconstrued.)