Preparing for the Philadelphia Flower Show

Time goes by so fast, this year's Philadelphia Flower Show(PFS) is approaching. Our Main Line Study Group got the assignment for six spots of exhibition. Fortunately, I am one of them and I am assigned to a 4' x 4' x 1' platform, it will be a large and tall Ikebana arrangement, and should be viewed by three sides. I have been planning my design and working hard to gather all possible, necessary materials and so on.....

Here is my plan: Base of the arrangement, a big piece of tree root and a large Japanese vase.