Have students select a sheet of Mylar or acetate, normally the sheets can be purchased in letter-size formats.

Ask students to create sheets with rounded-off measurements, like 22 X 28 cm, that will be easier to score. Any remaining space can be used to create a holder to keep the sheet rigid.

Have students measure and mark 4 or 2 cm distances along each side. The working format will be 22 X 28 cm. Using a very thin black permanent marker, students score the sheets to create a grid.

Once the grid is complete, have students attach it to a window and use it to view their subject.

Ask students to select another sheet of blank paper and create a grid, using the same measurements, with a light pencil (2h, 3h, or 4h). This sheet will be used for their drawing.

Have students view their subject through their transparent grid and transfer what they see onto their paper.

Ask students to keep the position of their head relatively constant and their distance from the grid consistent when they draw.

Once students complete their contour drawing, they can use pastels or colour pencils to finish their drawing.