Props
Take jack-o-lanterns, fake spider webs, old candles, and miniature skulls. Black hats, brooms, and plastic spiders are also great options to add a creepy vibe to your photos.
Location
Forests, abandoned houses, or basements are ideal. You can even create a dark corner of your home with dim lighting and props to create mysterious shadows.
Light and Atmosphere
Turn on flashlights or candles to create a soft, mysterious light. To highlight faces, use a flashlight from below or from the side, or use a cool light (like a smartphone flashlight) for a more eerie look.
Makeup
Choose a light makeup look: dark eyeshadow, a little black eyeliner, and an emphasis on the lips. For a "sinister" look, add a few strokes of purple or green eyeshadow under the eyes. Just a little bit, so as not to overwhelm the face.
I hope it turns out scary fun!