Flower Girl, Water color Paintings by Aileen Leijten. Flower Girl is based on a long time tradition in Belgium of children making and selling paper flowers on the beach in the summer. Instead of currency they use sea shells. This was one of my favorite things to do in the summer. Even as an adult when I go visit Belgium in the summer, I make point of spending a day at the beach making paper flowers and enjoying seeing the children play this beautiful game.