Blending Options-Gradient Overlay
Gradient’s parameters. 
Applying the previous instrument
, make one more element with the sizes from next image.
Blending Options-Gradient Overlay
Gradient’s parameters. 
For your convenience, merge down all the layers containing the circle in a group.
Copy this new made group 4 times and applying
Free Transform selection, increase it or minimize it if it’s necessary. Change the gradient also (the parameters are indicated for each particular case). Make everything look like in the next picture.
(Insert the
Opacity of 37% in the
Blending Options – Outer Glow parameter)
The next copy must have other parameters.
