I'm trying to get the hang of volumetric clouds and terrains (creating and shading). The bottom image is actually the first one I kicked out.  The top one I adjusted the sunlight slightly and tried to add trees.  I pretty happy with the clouds and the terrain itself is not too bad.  I think the texture needs more work. Somehow, the trees just don't seem right - I think it's the scale. I did find it a liitle odd that when replicating the trees if I jacked it up to 10,000 objects, it could only place about 3,500 even though I set the spacing for zero.  So I duplicated the surface replicator 2x to fill in the trees a little better.

Anyway, I'm looking to any comments or suggestions to make this look better.

Thanks.