Make a new file that is square (this example uses 80*80 pixels). Fill it with any color. | |
Draw a bunch of lines in the square. | |
Select FILTER/OTHER/OFFSET and enter in 1/2 of the width or length (40 for this example). And then select WRAP AROUND. | |
Now click on FILTER/STYLIZE/DIFFUSE. | |
Save the background and you're done. Look at the results: |