How do you lay coping stones on top of a wall?

To lay coping stones on top of a wall, first, ensure the wall is clean and level. Apply a layer of mortar on the wall's top surface where the coping will sit, then press the coping stones into the mortar, ensuring they are properly aligned. Use a level to check that each stone is even, and adjust as necessary. Finally, fill any gaps with additional mortar and smooth the joints for a finished look.