 The postcards used to introduce a country and their participants were shot in their respective countries and featured the artists using unique ways to create their country 's flag , e.g. the postcard for the United Kingdom features Molly creating the Union Flag from Routemaster buses , Royal Mail vans , and people wearing blue raincoats along with strips of red and white paper , and the postcard for Denmark featuring Basim and his singers using old furniture and red and white paint to paint the Danish flag . The postcards then ended with the act taking a picture on a camera or phone and a close up of the resulting artwork was shown onscreen . The flag created by the artist ( s ) is then captured into a diamond and it transitions to the official flag . It then swirls round for the before @-@ hand details of the artist / composer . For example , the entry for San Marino features the painting of the flag that Valentina Monetta ( the artist ) created , transitioning into the official flag for San Marino . 
