How to Press Flowers in a Book: -- In a book, between sheets of parchment paper or paper towel, lay flowers at the peak of their freshness. The flowers should be as dry as possible! -- Close the book firmly. -- Pile heavy books on top. -- Leave for 7 days- 1 month You can use these flowers in collages and potpourri baskets. If the flowers are edible, you can use them to decorate cookies or cakes!