Custom Shapes
Take Illustrator shapes, and use them in Photoshop.
Screen Blend Mode
Here’s a trick for lightening your images before you print.
Selections in Action
If you are making a selection while recording an action, you can use percentage to make sure the action works on documents of all sizes.
Before and After
Use the history palette to see how your image looked at the very beginning.
Saving Presets
Set up presets for your own commonly-used document sizes.
Using Presets
Save yourself some time when creating a new document by using one of Photoshop’s preset document sizes.