It's very important to me to have a vivid idea of what the character will look like in my head. Usually, I'll think of someone I've met/seen before and tweak their image around a bit until I get something new, but generally based off of that person. My question is...how do you personally create the character's image when writing fiction? Do you imagine a totally new person or base it off of an existing person (like you neighbor or a celeb)? Is it bad to base a characters looks (LOOKS, not personality/quirks/traits) off of somebody else?