Cream shortening in a large mixing bowl; gradually add sugar, beating well. Add eggs, pumpkin, and vanilla; mix well.
Sift together flour, baking powder, soda, salt, and spices; gradually add dry ingredients to creamed mixture, beating well after each addition.
Spoon batter into a greased and floured 10-inch tube pan. Bake at 350° for 1 hour and 15 minutes or until a wooden pick inserted in center comes out clean. Cool in pan 10 minutes; invert on wire rack to cool completely. Spoon Cream Cheese Glaze over top of cake, allowing excess to drizzle down sides. Decorate with candy corn, if desired.