Hi Node,
Nice start with this one. I like the trunk movement very much, and it does lead the viewers eyes on a gentle meandering path from the base of the trunk, up to the apex.
The only thing that I feel is unbalancing the tree at this stage, is the lowest two branches. I don't think they do anything to enhance the tree, and instead distract the viewer.
The top of the tree has a good start to it, with a nice triangle apparent. I've attached a couple of images below of what I mean.
Hopefully John Dixon will come along and spend some time doing a nice proper virtual.. cough*hint*cough
All the best,
Aaron