Make two copies of the layer containing the newly made circle and choose the
Free Transform option to situate the copies as it is demonstrated next picture.
Continue drawing the circles. The layer’s color this time is
#9D8A6A 
The layer’s parameters:
Blending Options>Outer Glow 
Blending Options>Inner Glow 
Blending Options>Stroke 
Make a copy of a circle situated above the city’s silhouette and choose again the
Free Transform option to place the copy lower than the layer with the big circle.
Continue representing the circles. This time choose for them the color
#F86E0C 
The layer’s parameters:
Blending Options>Outer Glow 
Blending Options>Inner Glow 
Blending Options>Stroke 
Next we shall create a new document of
5x5 px and
72 dpi, applying on it the
Pencil Tool (B) (
brush of 1 px) to represent a pattern of black color, the same way indicated next picture.
Save the pattern:
Edit>Define Pattern.
Create a new layer and make a mouse click on
Edit>Fill, selecting the earlier saved pattern.
