This is my world.
It is not unlike yours with regards to where land ends and where the sea begins. Mountain ranges might resemble those you know seen from afar. There are differences, though. The sizes and shapes of things might be slightly off, and colours may vary as well. There is, for example, Italy with a smaller shoe size and higher heel, or so I'm told. Also, North and South America are only almost, but not quite, connected.
You have to understand that this is not your world; this is the dream world - a place where day dreams and wishes come alive. It is constantly being created by dreamers from all over your world. They shape their lands not unlike their home, but different still. Humans never see the world as it is, you see, so no matter how close they want to stay to reality, it is still their personal reality that is being used.