Gradient?s parameters.

Applying the previous instrument
, it?s possible to create another element of black color with the sizes shown below.

Radius-25px
Fill 0% on the
layers.
Blending Options-Stroke

Gradient?s parameters.

Take the next tool
and draw a circle like that one from below.

Applying the previous instrument
, it?s possible to create another element of black color with the sizes shown below. 
Radius-25px
Fill 0% on the
Blending Options-Stroke

Gradient?s parameters.

Take the next tool
and draw a circle like that one from below.