Floating Flower Tip - Most flowers float pretty well on their own until they start to pool with water and slowly sink. For a longer lasting centerpiece, use bubble wrap to make little skirts for your flowers.
The white table cloth with the purple tulle strip down the middle. The center pieces on this table are too much. Go with a simple jar with purple glass beads in the bottom with a purple ribbon around the top and babies breath and a butterfly in each jar.