Turn over the leaf and slightly flatten the stem by pressing down. Add a tablespoon or two of the sweet potato filling about two fingers space away from the base. Add a teaspoon of grated cheese. Fold over from the base, covering the filling. Holding it down, fold over the leaves vertically on either side to close over. Tightly roll the leaves horizontally. Place seam side down in the baking dish spread with enchilada sauce. Repeat the same with the rest of the leaves and tightly fit it all in the baking tray.