The 5 Elements to Include in Your Horror Story

Instill a Sense of Fear in Your Reader. ...
Introduce an Aspect of the Unknown. ...
Use Cliffhanger Exit Hooks. ...
Add Thrilling Plot Twists. ...
Write an Ending That Contains Hope.

6 Terrifying Horror Movie Making Tips

Build Suspense.
Create well-developed characters.
Don't show the monster!
Dialogue, dialogue, dialogue!
Love your Antagonist.
Creepy Sound Design.