Use some of the smaller "bud like" heads. Not all the flowers have to be wide open. A contrast in size gives a little more visual interest.
I'm still tucking some in the sides, so that a lateral view is just as pretty as a frontal view is.
I see an opening at the very top, in between the two highest flowers.
Zip! In quickly goes another flower bud, longer than the flowers in the center.
Tucking it in a little deeper and facing the flower head upwards.
I see more holes that need to be filled with flowers.
I'm even gently pulling the flower heads apart, so I can insert another bud deeper into the design.
I buried this bud deeply into the greens. This helps give more depth perception.
Taking shape . . . the overall design takes less time than you think!
Here's a view from the right side, so you can see that the design has a rounded look - not flattened.
Here's a view from the left side. Such a simple design with timeless flowers - economical - but oh, so pretty!