flat. billboard for halloween. pumpkins, ghost, trees, crosses, spider, bat, cobwebs on a colored background

art autumn background banner bat billboard cobweb cobwebs collection colored composition copy crosses decoration design draw element fear festival flat fright ghost graveyard hag halloween harridan holiday horror icon illustration invitation invite magic many nflat october orange pack party picture poster pumpkin pumpkins rgb selection set skull sorceress space spider spooky style symbol trea treat trees trick various vector web witch