6
a. Make a copy of your crosshair layer by dragging it into the New Layer Button

b. Using the Move tool and with the help of the grid make the copy just slightly smaller than the original.
c. After you have the copy sized center it by hitting Ctrl + A to select the canvas, then using the buttons we used before to center it
d. Repeat steps a-c until you have 7 copies, each smaller than the one before it.
-To make the Layer Pallete more manageble click on the arrow next to the little "f" to collapse the layers styles area.