I don't speak fluent bumpkin.

I decided to dub the room with the good chairs my lutery. Or perhaps my performatory. I would need a while to come up with something suitably pretentious.

Death was like an unpleasant neighbor. You didn’t talk about him for fear he might hear you and decide to pay a visit.

...it is better to have a mouthful of poison than a secret of the heart.

It wasn't even a good note. 'If you are reading this I am probably dead.' What sort of a note is that?

You are an educated man. You know there are no such things as demons." Bast smiled a terrible smile. "There is only my kind." Bast leaned closer still, Chronicler smelled flowers on his breath. "You are not wise enough to fear me as I should be feared. You do not know the first note of the music that moves me.

Also, worldbuilding touches all aspects of your story. It touches plot and character as well. If you don't know the culture your character comes from, how can you know what he's really like? You must know your characters on a much deeper level than you would if you just shrugged your way into a cookie cutter fantasy world.