How can I effectively use wood glue for filling screw holes in my project?

To effectively use wood glue for filling screw holes in your project, first ensure the holes are clean and dry. Apply a small amount of wood glue to a toothpick or small applicator, then carefully insert the glue into the hole. Wipe away any excess glue with a damp cloth and allow it to dry completely before sanding or painting over the filled hole.