Thanks!
I was thinking more wasteland for the base. The tree died quite some time ago and the grass has turned yellow. I guess I could have put more grass around him, but it seemed okay to leave more of the base bare.
Part of this was based on the tree. A live tree would be harder to sculpt... I'd need finer branches and then leaves, all of which would obscure the view of the orc even more. And, if the tree is dead, a lush green surrounding seemed odd. Plus, without a bunch of green around him, the green orc stands out more. At least that was my thought process. Whether it's the right decision or not, well that's a whole different matter!