Once the jar and lid are bone-dry, bisque fire them. Again, keep the lid in place. You don't even have to remove the pieces of paper towel.
Once bisqued, you can decorate the jar with underglazes and glazes. Before doing so, always make certain to apply wax resist. Not only should you wax the bottom of your jar, but also all areas where the lid and jar meet. Just as when you wax the bottom, wax a thin "buffer zone", this time about one eighth of an inch wide, past the areas where the lid and jar meet on both the interior and exterior surfaces.
The wax resist will help ensure that no underglaze or glaze material will weld your lid and jar together. However, underglaze and glaze can still bead up on the waxed areas. Make certain to wipe all waxed areas clean as you decorate and glaze.
Tip: As you glaze, also glaze the middle interior of the lid (away from where it meets the jar). This will help avoid tension on the clay body that would occur if only one side were glazed.
Once the decoration and glaze have dried, you are ready to load your glaze kiln. Fire the jar to glaze maturity.
Details about the example pot:
Kitchen Jar
2009
Beth E Peterson
Mid-range buff stoneware. Main glaze is a cloudy transparent. Glaze-over-glaze decorations done with Amaco's Blue Rutile and Chun Plum glazes, two of the Potter's Choice glazes.