Your tablescape centerpieces are where you can incorporate a couple of height levels, and they're a great way to break up the space. Arranging different sizes of carved, lit-up pumpkins in a dim room will delight your guests. You don't have to make scary faces -- choose a monogram of your surname initial for an upscale twist on pumpkin carving. You can choose to skip the single centerpiece and instead use three or four smaller pieces around the table. Mason jars make great vases for single stems of flowers and fit well with an autumn harvest theme.