This is the first time I post in the Focused critique-section, hopefully it deserves to be here.
Rendered with blender internal, compositing and a little postprocessing (glow around the lightning bolt,…) in the GIMP, the tree was made with arbaro (in fact I used one of the example presets)
The clouds and fog are two particle-systems, the bright sky is an image from the " Free high resolution skymaps"-thread
There is still a dark “gap” between the grass in the front and in the back - I’ll try to improve the compositing there, I also think the rain could use some more work, for all other ideas/improvements I’m looking forward to your comments
XLA