
You mean these, right? A lot of good examples.

I made it so the separate leaves are now clumps of leaves.
On the trunk I made it darker because of the all the leaves above it, because, hey, thats got to be casting some shadows.
I put patches of bright green on the leaves to make it look shinier.
You might see that the shades I used don't make a gradient. I have a really bright shade, some middle tones, and a dark shade.