The problem with a scary story could be that the build-up to the scary parts is too slow or too rushed. Another issue could be that the ending is anticlimactic and doesn't leave a lasting impression.
Sometimes, the characters in a scary story aren't developed well. If you don't care about the characters, the scares don't have as much impact. Also, the setting might not be creepy enough.
Ghosts could be in a scary Cinderella story. Maybe when Cinderella was cleaning the house, she saw a ghostly figure in the attic. And when she went to the ball, the ballroom was haunted, and the prince was also a ghost.
Dark magic could be in a Minions scary story. Maybe an evil wizard casts a spell on the Minions, making them do bad things against their will.
A scary part could be when the ham is somehow related to a dark spirit or curse. Maybe the ham was made from a pig that was part of some ancient evil ritual. And anyone who touches or eats the ham will be haunted by the spirit. It's the unknown and the connection to the supernatural that makes it really frightening.
The cupcake could be cursed. For example, anyone who eats it starts to see terrifying hallucinations. They might see demons or ghosts all around them, and no matter how hard they try to escape the visions, they keep getting worse as the 'cursed' cupcake digests in their stomach. This would create a lot of fear and panic.
Curses are also a great scary element in a Halloween story. A curse that affects a person or a family, causing misfortune, illness, or death in strange and unexplainable ways. It gives a sense of doom and helplessness, as the victims of the curse are often unable to break free no matter what they do.
Maybe the plot is not engaging enough or the characters are not well-developed.
A liar who always fabricates stories about haunted places. Eventually, he finds himself in a place that seems to be exactly like the ones he made up. The things he lied about, like floating objects and disembodied voices, start to occur around him. He is trapped there, and every time he tries to escape, he is faced with more of the horrors he once lied about. It's like his lies have created a prison of fear for him. As he wanders through the dark corridors, he can feel an unseen presence following him, and the air is filled with a sense of dread that won't go away.
A really scary situation could be when the ribbons she wears start to strangle her. Maybe some evil force has possessed the ribbons and they turn against her, tightening around her neck and cutting off her air supply.
The sound they make. The screeching of birds, especially at night, can be really terrifying. It can send chills down your spine and make you feel like something bad is about to happen.
You could consider 'The Haunted Shadows'. This title implies that there are creepy and lurking shadows causing terror. It suggests an element of the unknown and unseen, which is often a key part of scary stories.