We still have a black grid here, but now the lines are gray and there are white circles in the intersections. Have a look and try to count all of the black dots you see.
Step 1: What black dots?
The goal of this Instructable is to show you how to quickly recreate such a grid with a graphics program. You can then make some variations of your own.
To start with we'll want a gray background. Lock this or put it on another layer and then start making your building block.