Iwata Asks: Zelda Handheld History
"Back then we had some long paper, and Tezuka-san and Miyamoto-san would sit side by side and draw together. You drew the stuff on the left, Tezuka-san, and the right side is Miyamoto-san's. If you look closely, you can tell how a marker was used to make small dots. These are rocks, and these are trees. And you can see Miyamoto-san's personality."