Adding a White Border Using the Crop Tool

1. Open photo.
2. Press [D] to set background default color of white.
3. Press CTL [-] to zoom out.
4. Press [F] to see the desktop gray area that surrounds the image.
5. Press [C] to switch to the Cropping tool and drag out a cropping marquee border on the image.
6. Drag out a side handle or corner point of the marquee border outside the image. The gray area that the cropping marquee selected outside the image will become the white canvas space.
7. Press [ENTER] to crop.

Automatic Straightening and Cropping of Scanned Photos

1. Open scanned photo.
2. Go to File>Automate>Crop and Straighten Photos.
3. Photoshop will find straight edges on your photos and automatically crop and straighten the photos and copy each into its own separate window.

Rule of Third Cropping

1. Edit>Preference>Guides, Grid & Slices >Grid enter 33.3 in Gridline Every Field
2. Then choose percent on from the pop up menu on the right, change the default setting from 4 to 1.
   
3. Click [OK].
4. View>Show> Grid.
5. Return to your Image.
6. Press V to switch to MOVE tool then position the image on your desired location.
7. Crop image.