If bubbles are still present after the Glaze Coat has become smooth to the touch (generally 36-72 hours depending on room temperature), use 400 grit sand paper to sand 'open' the tops of the bubbles.  Some bubbles may be deep in the project and require more sanding to remove them.  After sanding, wipe the surface free of particles with a cloth lightly dampened with acetone or alcohol.  Do NOT use a tack cloth.  The surface may appear hazy and uneven but another application of Glaze Coat will allow for a seamless finish since the product self-levels (as long as the project is level) and will fill in any low spots or dimples.  Allow the acetone/alcohol to fully evaporate before mixing and applying the next coat.