The worst way, in your opinion, to start a fantasy?

Having a character check out their appearance in the mirror, and it turns out to be a dream.

Or the unexplained sudden appearance in the mirror , of a beautiful Wicked Queen offering fashion and beauty tips and, touting the health benefits of apples ? ;)
By the early spotting of words like "mage", "princess" or "elixir" and thinking "Hmm. teenage bedroom writer," and putting it back o the shelf. :whistle: