How to make softer, more natural lighting? I'm trying to recreate this image:


This is what I have so far:


The lighting doesn't look as soft and natural as the first picture. Lighting has always been that hurdle I can't jump across, but now it's starting to become more of an issue. Right now I am just using two emission planes for the light source.

https://drive.google.com/file/d/0BzgDIjhDOu6EbGVhZEtHQ2d1V3M/view?usp=sharing
The reference image is a studio lit still life. There are two "Soft Boxes" camera left and a spot light on the background. Probably a black card camera right to prevent light from filling in the shadows. It appears a relatively long lens was used to compress the scene and emphasize the shallow depth of field. 

Here is how I recreated the scene in Blender with a camera focal length of 150mm.