Create a vivid and graphic image of a zombie. The zombie should be wearing tattered and dirty clothing that appears ragged and worn. Its skin should look rotten and decayed, with a sickly hue and visible patches of decay. The eyes should be cloudy and lifeless, giving an eerie and haunting appearance. The mouth is open in a menacing snarl, revealing rotten teeth and bits of decayed flesh. The overall atmosphere should be dark and unsettling, emphasizing the horror elements of the zombie's features. Include a gloomy background that enhances the eerie mood