I enjoy making centerpieces interesting by using different kinds of mixed greenery. Here I'm going to insert some seeded eucalyptus - one of my absolute favorites.
One bunch has a generous amount of leaves, seeds and laterals. I'm going to just use the seeds, since I planned on using the leaves for boutonniere and corsage work.
Insert the eucalyptus the same way as you did the leather leaf fern, beginning close to the center and working your way out.
Let the greens hang naturally, falling with a gentle curve downward and outwards.
You can see that just a few sprigs here and there definitely added an interesting color and texture to this centerpiece.