The term "final touch" refers to a finishing or decorative action that is applied near the end of a project, in order to add an extra level of detail and completion. It could be something as simple as adding a border to a painting, or as significant as placing the last piece of furniture into a room before it's considered complete. The final touch can make all the difference between good enough and perfect, bringing everything together in a way that makes the whole project feel polished and finished.