The middle one is the actual picture. The top one is the reduced and bottom picture is the enlarged version of it. Its actually fun working on this, you can make a picture as big and small you wish.
You just need to take out a picture from the magazine. Divide them horizontally and vertically into boxes. Take a fresh page, draw the above boxes, increasing or decreasing the measurement, keep on drawing the picture, the curves in each boxes, and paint it, that will be your enlarged or reduced picture.