I'm going to place some shorter pieces of pitt at the bottom and facing straight forward. This helps give depth and dimension to your final design.
Don't neglect the bottom. Angle the greenery upwards so the the tip points down towards the table top or floor.
The greenery is filling in nicely and has a balanced look and feel to it.
Tuck shorter pieces in the center of the greenery.
When finished with the last of the greenery in the cellophane sleeve, I still have some open space in the greens (especially in the back)
I'll finish up with leather leaf fern, an inexpensive greenery that is a staple in every flower shop.