Sometimes you want to enlarge an image, maybe your own drawing or a comic strip. A handy method that does not require any equipment is the following:
Step 1: Draw over your example a grid with squares of, for example, 1 x 1 cm (see image). In the example, the grid consists of 10 rows of 10 squares each.
Step 2: Suppose you want to make this drawing twice as large, then you first draw (with a ruler!) a frame with 10 rows of 10 squares, in this case however with squares of 2 x 2 cm each. Suppose you want to enlarge the drawing four times, then each square must be 4 x 4 cm. and so on. This way you can easily enlarge the original because you can see what has been drawn per square.
Exercise: Choose a cartoon or other image and try to enlarge it two or four times.
Roy Lichtenstein (1923-1997) turned tiny comic strip images into large paintings. In this way, he brought the world of comics into the museum.