"Finishing touches" refers to the final small details or adjustments made to something in order to complete it or improve its overall appearance or functionality. Full definition
Chrome is popular for putting finishing touches on everything from household appliances to military equipment, but it's also known for the environmental and health hazards it comes with. (treehugger.com)
He was inspired by the characters for the process of putting finishing touches on the song. (thoughtco.com)
It's the perfect finishing touch on bare skin or on top of makeup. (facetocurls.com)