For the centerpieces, I will have three different heights of glass vases.  2 tall ones and a shorter one filled with ice crystals and an arrangement of my flowers.  The two tall ones will look something like these.

The really tall ones will have a stem of green orchids in the bottom with a big arrangement on top with my flowers and the other tall one will have a stem of blue delphinium in the bottom with an arrangement up top.

Chair Covers