The world is recorded as-is during exploration, meaning that if the world is modified, a player must revisit the area while holding the map to update the map's.
Crafting a map creates an empty map. The map is drawn for the first time when it is held and used (with use item). This map can then be adjusted to different.
Make a map in Minecraft by using a crafting table, paper, a compass, and some Redstone dust. You craft paper with sugar cane and then a compass from iron.