In the User Defined menu, choose the brush file you named. To access the brushes from any document, click the Brush Libraries Menu button.Name the file and leave it in the default folder.Then click the Brush Libraries Menu button in the lower-left corner of the Brushes panel and choose Save Brushes. Open the Illustrator file containing your custom brushes in the Brushes panel.One last tip when working with brushes in Illustrator: If you have a document with saved brushes in the Brushes panel, you can set it up so that you can access the brushes from any file. Video 5: Creating a cool tree art brush Saving Your Own Custom Brush Library If this is the case, please enable JavaScript and reload the page. You may also see this message if you have JavaScript turned off. You need version 9 or above to view this video. Optional content (will be overwritten by Flash movie)