By now your image should look like this: If you want to finish just now, it is your business but to have more 3D like shape we are going to work on our circle a little more. OK. If you got a circle like mine on the picture you can continue.Again choose circle layer and change the layer style blending options, inner shadow. Opacity 15%, Angle 90, use global light. Distance 5, Choke 15, Size 5.