Enjoy your line! Method 2: Using “Straight Line Drawing Mode” Step 5: Hold down SHIFT and click where you would like your line to end. Step 4: Click anywhere on the canvas where you would like your line to start. Step 3: Select your desired line stroke width.
Step 2: Click on the Brush or Pencil tool icons. Step 1: Open PaintTool SAI and create a new canvas. The simplest way to create straight lines in PaintTool SAI is using the shift key, and here is how to do it, step by step.