What's your aesthetic?
"Concerned with beauty or the appreciation of beauty."
Perhaps it's Neon? Vaporwave? Grunge? Pastels? Hipster? Anything at all. Describe your aesthetic.
Think of it as an escape. What kind of visuals, sounds and feelings make you happiest, and appreciative of your surroundings?
Here are some examples! (They don't have to be like these examples, be creative!):
If you are still unsure, search the web and see what you can find!