Photoshop arrow brushes are useful extensions if you are not contented with the default arrow brushes that you can find in the custom shape section of your graphic software. Of course, for simple, and straightforward creations where you want to simply direct your audience to the specific portion of your design, the default shapes are usually enough. To find them, all you have to do is to: 1. Right Click on the rectangle tool at the bottom of Photoshop toolbar. 2. Select Custom Shapes.