1. First set the background color to white and the foreground color to black. Open an original image
2. Click the Channels channel of the Layer panel and create a new channel Alpha 1. When you see that the image turns black, click the menu Edit/Fill, fill it with white, and click "ok" button and fill Alpha 1 with white. Use the Pencil tool in the toolbox to select the appropriate Brush brush, and draw a zigzag line in the middle of the image as the edge of the torn paper.
3. Use the paint bucket tool and left-click on one side of the line you just drew to make one side black.
4. Click the menu Filter/Others/Maximum... filter, in the dialog box that opens, set Radius to 2, and click the "OK" button.
5. Click the menu Filter/Brush Strokes/Spatter and set the appropriate settings in the pop-up window.
6. Click the menu Filter/Blur/Blur filter to slightly blur the edges.
7. Click the menu Image/Adjust/Level command and set it appropriately. After setting, click the "ok" button.
8. Hold down the Ctrl key, click the Alpha1 channel on the Channels panel, and select the white part. Click on the lay panel and click on the image layer. Make it the working layer.
9. Press the key to delete the image in the selection.
10. Click the menu Lay/Effects/Drop Shadow command to add a shadow to the image. Click the "ok" button to get the preview effect. Production is complete.
Note: Several steps have been written with appropriate settings. PS, a highly operable software, focuses on using different effects for different pictures. The size adjustment varies from picture to picture, so you can slowly adjust the settings. groping.