If you draw inspiration from a picture, music, place, and other things like that, do you have to cite it or reference it? Such as (this is a random one): if you want to see what hair styles a fictional character should have, you look up hairstyles and then use one of them. I mean if you draw inspiration from sources to create a character such as from pictures or hairstyles. I know this is dumb, but I get really paranoid about this XD.
It depends. Mostly, no.
Let's say that you see a black dhole for the first time (in real life, not the video game Far Cry). You could get inspiration from that and write about a black dhole. Do you have to cite it? No.
Or how about you see a super-cool industrial-looking building. If you just base an idea off of it, but change up things, you don't have to cite it.
What if you get inspiration for a research paper (or something like it), and you got inspired because of a person. It would be perfectly fine to say that you got inspiration from them, but you don't have to.
Did you get info from somewhere, that inspired you? If you bring it up, cite it.
It just depends on the situation. You can cite it, but it's not necessary in most situations and may even seem out of place in other situations.