Wedding Car Decorations

Have often seen the ribbon decorations on the wedding cars in Italy and wonder how they are made. Have done a search on google, but not found how to make them. One of the girls where I work in England is getting married soon and she has the kind of car that we cannot risk damaging when we decorate it on her last day before she goes off to get married. Thought that the ribbon decorations would be ideal. Has anyone seen any websites where they show you how they are made? Many thanks Toni