For a birthday or another special event book cakes are a classic. In this tutorial we show you how to decorate with piping bag and whipped cream. We made the base using a special mould book shape, and then we covered with white cream our cake. Then we decorated the edges of the book with the whipped cream and the pages of the book with the floral decorations. The roses in sugar paste make the cake even more beautiful. Remember to add flowers in sugar paste only a few hours before eat the cake. The flowers must be dry (prepared at least 24/48 hours before) and, if possible, be isolated from the cream with butter cream (same colour of the cream).