Sure isn't but the improvement is fantastic. Right now I think your colour ramp (the progression between dark and light shades of your green colour) is a little disjointed. I wonder what program you use.
It's hard to explain in words. I made an edit.

You're shading much better than pillow shading, but you're still shading the object as if it was flat with some parts sticking out more than others. I tried to give you an idea about how I think you should go about shading the tree. Gave you some examples of ways of shading. When you've got your light source diagonally from the top like .. like most people use for 'standard shading', you need to think about the object in 3d and realize that the brightest parts will also partially face the viewer, and the edges might actually be a bit darker. The examples with red crosses are ways you shouldn't shade, of course.
I also liked the size of the tree crown compared to the trunk that you had in your first attempt so I just added more leafage.
Any questions - just ask away.