After a relaxing 10 days away, I got back to the model. Well, actually I was spending way more time fiddling around with the tree shader. It was definately good practice and have learned quite a bit about vegetation shading.
For the final piece, I think I shall use a different tree however, as it is only using single sided leaves – I would like to use a two sided shader if possible. I going to be finishing off the grass today and doing the shader for that. Grass shall be done via particle instances over the surface.