If you’ve ever wanted to make your own map—either of the real world or a fantasy world of your creation—these tips from Jonathan Roberts are essential. Roberts is best known for creating the maps for the Game of Thrones cartography book Lands of Ice and Fire. Check out his website Fantastic Maps for more tips, including how to design a map for a town, how to draw a cave, how to draw a chasm, and how to indicate different elevations with shading.