With Leaves Only

I have done this "Leaves Only" arrangement in the past, but my teacher wanted us to arrange it in a more artistic or more abstract way this time. She likes to push us one more step to a higher level. I always have a tendency to arrange ikebana more traditionally. I found it so hard to arrange the "leaves only" this time. I am not sure that I achieved it?
The philodendron selloum was still not tall enough, but coral bell leaves match the vase very well. (7/21/2011)