Create a new file with 345x345 px and 72 dpi. Using the shown instrument , picture a figure, which radius must be of 40px.
The parameters are included in the Blending Options, you may see below.







You must get the next one:



Create next step a lot of circles, having different Stroke option, applying the instrument .
Fill 0% on the layers’ window. The color’s code must be 2D9700.



Create now a new layer. Choose the next instrument to paint out in white everything that is situated outside the picture’s frame.



Apply the indicated tool to represent next figure.



Blending Options’ parameters are indicated below.