halloween theme. haunted house on a hill with the moon in the background surrounded by cemeteries, trees, bats, pumpkin masks with

halloween house spooky night hill moon holiday haunted horror creepy background celebration evil bat vector cartoon scary castle ghost illustration dark tree silhouette art poster party october grave pumpkin autumn black witch graveyard design old invitation cemetery moonlight backdrop seasonal fear decoration layout banner home nature mansion ominous mist sky theme surrounded cemeteries trees bats masks glowing eyes close-up selective focus AI