It was a technique used for the soap challenge club a couple of months ago, so there should be some YouTube videos and Instagram posts available to see. You have to make your soap bars first, and then pour the soap 'glaze'. You need to have your soaps elevated when you pour and know that there is a pretty significant amount of 'pour over' soap that is lost. I set my soaps on cups inside a silicone mold to catch the run off. You could also line a tray or mold with a plastic bag. Sadly, the soap doesn't stay glossy. I understand there is a product sold for icing that you can spray on to keep the surface shiny that works, but I haven't used it. My entry was the black, silver and white soaps. It is a fun technique.