Sometimes a bonsai creation works well and sometimes a gentle adjustment in one factor can result in a great improvement. In this case a seed grown Ficus natalensis in the exposed root style appears to work quite well. Making a simple adjustment and tilting the tree to the right improves the design immensely. The left or original image shows a pretty much upright tree that is static. Tilting the tree to the right makes the design a bit more unstable but also allows the movement of the trunk to be emphasized.

Ficus natalensis on left shows good stability while the image on the right is a bit more unstable but seems to help the flow of the trunk