Tree Modeling Screenshot
From left to right;
1 Flattened tree model with a layered shader for the outline
2 Tree model with branches with a layered shader for the outline
3 Rectangular plane with a manual outline applied to faces along it edges
4 Unchanged tree model
The left most tree does not work particularly well with an outline and as such does not appear in the render image. At the moment I am testing what type of model works best to provide a clear outline. I think I will work with the outlined model (number 2) as it is close to what I want in my animation, it does need some work though before I am happy with it.