Here is the fifth render I did after adjusting the depth of field, lighting and positioning of the camera.
Here is the fourth render I did after adjusting the depth of field, lighting and positioning of the pieces.
Here is the third render I did after adjusting the depth of field, lighting and positioning of the pieces.
Here is the second render I did after adjusting the camera angle, lighting and positioning of the pieces.
Here is the first render of my chess pieces once I had incorporated "depth of field" into the scene to add effect.