Gingerbread Reindeer

Name: Gingerbread Reindeer
Ingredients: 2 cups all-purpose flour, plus more for dusting (see Cook's Note); 1 tablespoon ground ginger; 1 teaspoon ground cinnamon; 1/2 teaspoon baking soda; 1/4 teaspoon ground allspice; 1/4 teaspoon freshly grated nutmeg; 1/4 teaspoon baking powder; 1/4 teaspoon fine salt; 1/2 cup granulated sugar; 1/2 stick (4 tablespoons) unsalted butter, cut into 1-inch pieces, at room temperature; 1/4 cup molasses; 1 large egg; One 1-pound box confectioners' sugar; 5 tablespoons meringue powder; Black gel food coloring; Brown gel food coloring; 18 red cinnamon candies