Open a new document by pressing (Ctrl+N).
Set the Width to 600 pixels and the Height to 300 pixels.
Select the Paint Bucket Tool and fill your canvas with this color: #1e2a44
Create a new Layer (press Ctrl+Shift+Alt+N)
Select the Rectangular Marquee Tool and use these settings
Then press one time on the canvas.You will notice that we have a selection.We need to fill our selection with this color #dec893 (you can fill your selection with your Paint Bucket Tool)
Now create a new Layer (press Ctrl+Shift+Alt+N)
Go to Select > Modify > Contract. on this window use : Contract by 5 pixels, and press ok
Now fill this selection with #414141
Now we will create a pattern.
Open a new document with a transparent background (size 3 x 3 pixels)
Grab the Pencil tool and at the top of the screen you will see the pencil options.
Click on the down arrow next to Brush: and change the diameter to 1 px
Then draw something like me. I have used a black color to make you understand what you need to draw but please note that we need a white color.
First you should resize your 3x3 document to 1600 %. you can do this from the navigator panel.
Then make something like this.
Now go to Edit > Define pattern and name it whatever you want.
Now select the grey rectangle and let's apply a layer style. Please use these settings:
Until now this is what i have
Select rectangular Marquee Tool and Make a selection like this:
Then with the grey layer selected press delete one time.You can move your selection with the arrow keys and make something like me
You can use also rounded selections, or you can transform selection and like above press each time you thing you are in the right place.
This is a technique i like most. It is very easy and the outcome is great.
I have played a little and this is what i have.
I hope you like it.

