Good to see you using the root this way. Couple of suggestions...ignore if you wish LOL. Get some trailing artificial or dried leaves and / or flower stems in the vase so that they drape over the root, it will give the whole piece a continuity and a different perspective. The little bowl, keep your eyes open for small marked pebbles and put one or three (odd numbers work best) in it, again it gives a different feel and will lift the whole piece into a different realm. When I do these pieces I find that sometimes I chop and change my mind half a dozen times and try different things before I am happy with them but it is worth it as the root has a beauty of it's own well worth working at.
Pete