​ ​ First, you need to search for illustration brushes on the Internet, find the brush you need, and download it to your computer. If it is a compressed package, you need to decompress the brush file first and find the file with the abr suffix.

Open PHOTOSHOP CC editing software and start loading brushes. Click Preset Manager in the Edit menu, select Brush as the preset type, and then click the Load button.

​ ​ Find the storage directory of the illustration brushes in the loading dialog box, select the abr file, and click the Load button.

After loading successfully, click the Finish button.

​​Select the brush tool in the left toolbar, select the newly loaded illustration brush in the upper options bar, and paint in the document.