How to Customize a Brush in PaintTool SAI Your new brush will now appear in the Tool menu. For this example, I am creating a new Pencil brush, so I am selecting Pencil. You will then see options to create a new brush type. Step 2: Scroll down in the Tool Panel until you see an empty square. All you need to do is right-click the tool panel, and select a brush option. How to Create a New Brush in PaintTool SAIĪdding a new brush to your tool panel is the first step in creating a custom brush in PaintTool SAI. You can download custom brush packs made by other PaintTool SAI users online.Customize your brush using Brush Settings.Right-click any empty square in the Tool menu to create a new brush.Can you import Photoshop brushes in PaintTool SAI?.Does PaintTool SAI have custom brushes?.How to Customize a Brush in PaintTool SAI.How to Create a New Brush in PaintTool SAI.