Place your ornamental cut flowers into your water vase, make sure that you put it one by one. If it's going to be a design or floral arrangement against a wall or flat surface you have to put the tallest or longest cut flowers at the back. If your design or flower arrangement will be visible from the sides place your longest or tallest flowers in the middle. Begin with the longest or the tallest, and then go out to the lips or edge of your flower container. Now, take time to look at your flower vase, is it beautiful and pleasing to see? Did it turn out to be symmetrical? Is there a spot or an area that needed to be filled in with more flowers?
Single, larger blossom flowers, such as roses, carnations, zinnias, tulips or lilies, usually make up the focal points of a piece. Taller stems with multiple flowers can balance things nicely. Delphinium, gladiolus, and snapdragon are good examples of flowers that can add extra height and texture. "Filler" flowers, or stems with many small buds, are great for topping of a bouquet with a full and delicate look.