Ignoring Canon Destroys Fantasy

When you create a fantasy world in any form of media and build canon for your story, you and future heads of the story must respect the canon and lore or it will destroy everything and ruin the emersion for fans.

Sources:
https://thatparkplace.com/game-of-thrones-creator-george-r-r-martin-warns-creators-ignore-canon-and-the-world-youve-created-comes-apart-like-tissue-paper

https://www.ign.com/articles/george-rr-martin-calls-out-game-of-thrones-and-house-of-the-dragon-for-messing-up-targaryen-sigil