How can I achieve a professional finish when refinishing pine floors?

To achieve a professional finish when refinishing pine floors, follow these steps:

1. Sand the floors thoroughly to remove old finish and imperfections.
2. Apply a wood conditioner to help the stain absorb evenly.
3. Choose a high-quality stain and apply it evenly with a brush or rag.
4. Allow the stain to dry completely before applying a clear polyurethane finish.
5. Apply multiple coats of polyurethane, sanding lightly between each coat for a smooth finish.
6. Allow the final coat to dry completely before walking on the floors.