I wanted to demonstrate how easy it is to create a digital overlay with just one simple stamp.
Open the stamp of your choice. Select Edit--Define pattern.
Create a new blank 12x12 file with the background transparent.
While your new blank layer is selected, go to Edit--Fill Layer.
Under Contents select Pattern then use the drop down menu to find your stamp.
Select OK. Your blank page should now be filled with that stamp image. You're done!
Save as a png. I don't adjust the opacity or alter this image. I save that for when creating a layout.