Photoshop is a powerful image editor that can be used to create beautiful graphics and photos. However, it can also be used to create terrible designs and graphics that look like they were made by a child. One of the most common mistakes people make is not having an undo button in their Photoshop editor. This can easily lead to disaster when trying to fix a mistake or change an existing design. Without an undo button, it can be difficult to fix a mistake or change an existing design without causing further damage.