This is my result on week 4 on the Nature accademy course
Trunk , ivi, fern and plants are 3d models, the background is an image and some work on the compositor.
Rendered in Blender internal , about 7 minutes at full resolution, so maybe some day if I have or know a well renderfam and how use it I made an animation
I hope you like it !
(click on the image for see in full resolution)