Pixelating


Step 1

Have your sign open and ready.



Step 2

Select the brush tool.



Step 3

Select a Hard Round brush sized around 14px.



Step 4

Create a new layer above your sign.



Step 5

Select your desired foreground colour. I'm using a darkish purple.



Step 6

Draw a few scribbles where you want to pixelate (as shown below).



Step 7

Go to Filter > Pixelate > Mosaic.



Step 8

Set the "Square" size to around 21 pixels. Then press "OK".



Step 9

Go to Filter > Sharpen > Sharpen.



Step 10

Sharpen it again one more time. Then lower your pixel layer opacity to around 60 or above (depending on your sign, mess around with it and see what looks best).



Result

This is my result.