Thanks everyone for the feedback :)
RolandB - My lighting setup is really simple and this is the first scene I have used the Corona Sun. I increased the size of the sun size a little to get softer shadows as they fell further away from the object of origin. Outside of that, I used the same settings as I would normally use for a HDRI (this scene was lit by HDRI to begin with) I have attached an image and highlighted the areas I change from default. I spend a bit of time tweaking Post Processing settings for each image but outside of that its pretty much the same setup for all my images.
johnymrazko - Im still working on getting leaf settings a little better but I think it's getting closer (valuable tips picked up in the forums here) I use variations of the same map for each of the necessary slots. I also use a colour correction on my base leaf which makes it easier to create variations of the leaves for each tree type (for example, I might have 3 different tree species with 3 different leaf maps...but I can make variations of these simply by changing the hue/saturation slightly). The translucency map is the same as the diffuse map, only a little more yellow (this is also done with colour correction). The Reflect is the same as the bump, with the reflect being darker than the bump map (again using colour correction).
Hope this helps.
Cheers
Mark
