Create a new blank layer above the opened photo layer.
As shown in the picture, select the custom shape tool (shortcut key Shift+U, cycle shortcut key, so you need to press it several times).
Click the Shape drop-down button on the Custom Shape tool options bar, and then select the Custom Shape tool within the grid shape.
If we want to crop accurately, then open the information panel in the window menu. When using the custom shape tool to draw the cropping area, pay attention to the values of the width (W) and height (H) fields on the information panel. Here we use 13 x 19 inches as an example.
