How can I effectively apply polyurethane over stain to protect and enhance the finish of my wood project?

To effectively apply polyurethane over stain to protect and enhance the finish of your wood project, follow these steps:

1. Ensure the stain is completely dry before applying polyurethane.
2. Use a high-quality brush or applicator to apply a thin, even coat of polyurethane.
3. Allow the first coat to dry completely before applying additional coats.
4. Sand lightly between coats for a smooth finish.
5. Apply multiple thin coats rather than one thick coat for better protection.
6. Allow the final coat to dry completely before using or handling the wood project.