Here's the final.
First I wanted to add some clouds in it as well, but I thought that would be a bit too busy then, it looks fine now I think/hope
I'll use those clouds in my next scene.
I've applied some extra exotic displacements and I think they turned out very well.
I've also added a fine sandlayer made of 4 fake stone layers. Unfortunately they had to be rendered at detail 1.5 to look like this, lower detail gave way too noizy look.
Rest is GI 2/2 and AA @ 16 for the plant.
Render times were insane
C&C always welcome, hope you'll enjoy this one as much as I do.
Martin