Modelisation of foliage
Here I opted for a "C" shaped slice. Image #994
The slice will be duplicated nine times around the trunk . Image#996
Each slice is ajusted separetly depending on branch positions over rotoscope trunk templates, in three axis.Image#997
Some slices are amputated in order to avoid high mesh density at tree top. Image#998
Notice the slices don't reach the center of the trunk, this is also to limit a high foliage concentration around the trunk
More 3D Graphics: 
