You can see that as we start to fill in the gap between the top and the base, how the overall design is starting to take shape. After we place all of our snapdragon, let's change to another flower. In this case we are adding some red carnations. The contrast is an interesting one. Snaps are a spike flower.
Carnations are a face flower.
The placement of the carnations starts with one on the top slightly to the side of the center middle snapdragon. Then we place some carnations down at the baseline. Finally place carnations in between the top flower and the base line. The overall effect is to start filling in some of the void. The carnations help, but the design still looks empty.