Then he finds the latitude and longitude and the projection to be used. Because the Earth is round and paper is flat, it is hard to draw a map without distorting the shape of the Earth. A map maker decides the type of projection to use based on who will be using the map. Navigators and surveyors use conformal maps because they need true shape and direction. Most maps use compromise projections.
Airplanes use Equidistant projections.
Once Will has an outline of the area he fills in the details. Physical thematic maps show land formations, rocks and minerals, or weather. Cultural thematic maps show population, languages, religion, or economic trends. Maps can be a combination of different types. A physical map may also show outlines of states, and political maps may show oceans and lakes.