halloween party, creepy carnival poster, happy friends in masquerade costumes. young people wearing spooky halloween holiday

autumn backdrop background banner calligraphy cartoon celebration character children color congratulation costume creepy different fall festive flat fun graphic halloween happy holiday horizontal horror illustration isolated jack lantern layout monster mummy night october outfit party people pumpkin scary season skeleton spider spooky template text tradition trick treat typography vampire various vector witch carnival poster friends masquerade costumes young wearing outfits illustration