Whenever I read a book, I always 'cast' characters as celebrities. It's usually more entertaining if I can see the book in my head as I read it. So naturally, as I write my book, it's hard for me to just picture the characters - I feel the need to cast them. I like being able to look at pictures of my characters and watch videos about them to get ideas on how they interact. However, some of the celebrities play roles that mirror what my story is about. I don't know if that's subconsciously why I picked the celebrities, but I don't want to copy characters from another TV show or book into my story by accident. I feel as though I could distance the character and the celebrity quite well, but I always feel guilty for some reason, like it's not my character. But it's really hard for me to picture a random person without making it look like a celeb. What do I do?