Well, here are some. 'I woke up to find a handprint on my window. It was on the inside.' And also 'My sister said she saw mom in the attic. Mom has been dead for years.
Some examples could be. 'The old house was empty. I heard footsteps in the hallway.' 'I looked in the mirror and saw a face that wasn't mine. Then it smiled at me.'
I opened the old wardrobe. A pale hand reached out for me.
Sure. 'Final Breath' is one. It makes you think of someone taking their last gasp, which is quite terrifying in just two words.
Keep it simple. Focus on one creepy idea. For example, start with a normal situation like 'I was reading a book at night' and then add a terrifying twist like 'The words started bleeding off the page.'
Sentence 1: I woke up in the middle of the night to a strange scratching at my window. Sentence 2: When I looked out, my own face stared back at me, grinning.
One: 'The old doll in the attic blinked. I ran out of the house.' The horror here is that dolls are often creepy, and a blinking doll gives a sense of the inanimate becoming alive, which is very unnatural and terrifying. It violates our perception of normal dolls, and the reaction of running out of the house shows the extreme fear of this abnormal situation.
A two - story shed could be like a large agricultural shed. The ground floor might be used to store farming equipment like tractors and plows, while the upper floor could be for storing hay or smaller tools.
Another could be 'Cake, teeth, scream'. The idea is that something normal like a cake suddenly becomes terrifying when you think of teeth and a scream perhaps related to something hidden in the cake.
They often use common horror elements. For example, like the idea of something abnormal happening in a normal setting. In 'The picture on the wall changed. No one else noticed.', the normal wall picture changing is strange, and the fact that no one else noticed makes it even scarier. It makes you feel alone in this abnormal discovery.
I was alone in the forest. Out of the darkness, a pair of glowing eyes stared at me.