My first step was to make a big cut out of the continents and then trace the continents onto the canvas.
The next step was to start applying the watercolor and figuring out how much color was needed for the piece to be vibrant.
Then I finished the ocean.
Once the ocean was finish, I painted the continents and viola! And this map is about as accurate as they come, because there is Hawaii and other small islands painted on the watercolor map.