Converting Pencil Lines to Brush Strokes The Pencil Lines to Brush Strokes operation converts the selected centreline pencil strokes into contour strokes brush lines. This feature works for both solid and textured pencil lines. How to convert pencil lines to brush strokes In the Tools toolbar, select the Select tool. In the Camera or Stage view, select the strokes you want to convert. Do one of the following: From the top menu, select Tools > Convert > Pencil Lines to Brush Strokes . Right-click on the selection, select Convert > Pencil Lines to Brush Strokes.