Can a dragon judge osmusa

"Can a dragon judge osmusa?" This is a line from one of my favriot books, Fairest by Gale Carlson Lewis, I think. Anyway the main character Aza thinks she's really ugly and she's always told by her mother I believe "Can a dragon judge osmusa?" I' ve always just sort of thought "oh that's cool" but I never really thought about it. Today, someone who has never read my writing told me it sucked and that's when I got it. How can this person rightly judge my writing when they have no clue what it's like. From now on I'm going to try or check out something before i judge it.