How do you apply shellac to achieve a professional finish on your furniture or woodwork?

To apply shellac for a professional finish on furniture or woodwork, first prepare the surface by sanding and cleaning it. Then, use a brush or pad to apply thin, even coats of shellac, allowing each coat to dry completely before applying the next. Sand lightly between coats for a smooth finish. Repeat this process until you achieve the desired level of sheen and protection.