As you may have noticed there are two design principles which I love to use in my work. Repetition and symmetry. But once in awhile it's nice to spice things up! In the floral installation below I used five vases in different shapes and sizes, and all with different specimens inside. What I like about this, is that you get to enjoy each flower or green individually but they have more of an impact grouped together than if they were displayed alone.
Most people at home have a collection of mismatched vases from gifts etc. This is a good way to use them! Do a grouping in your entry or on your dining table. I find it most effective if you stick to one color. Experiment and have fun!