How do you make a mitre joint step by step?

To make a mitre joint, first, measure and mark the lengths of the pieces you want to join. Set your miter saw to a 45-degree angle and carefully cut each end of the pieces. After cutting, align the edges of the pieces to form a corner, ensuring they fit snugly together. Finally, apply wood glue and clamp the joint until the glue sets, or use screws or nails for added strength if necessary.