Take the same tool and draw the next circle with the next sizes.

Blending Options-Gradient Overlay

Gradient’s parameters.

Merge down now all the layers composing the button in a group.
Copy this new made group 9 times and place everything out the same way it is done below.

Take the next instrument and represent the next element with parameters from next picture. It must look this way:

Blending Options-Gradient Overlay

Gradient’s parameters.

Applying the previous instrument , make another element with the sizes shown next step.

Blending Options-Inner Glow