
2. Where it says Current width and height make your new document the same pixels it says. Then cancel the Canvas Size. After that, click the Brushes tool and go to your color palette and choose Pattern.

Say this was my layout:

3. Double click the pattern icon in the color palette. Find your layout and click on it.
After that find the Tool Options and set your preferences like mines:

On the left side you I made the a preview of a bubble shaped layout :] And on your Tool Options, if you want the circles to be bigger just make the brush size of the circle bigger.

