Long ago, I had the idea to have a snow covered world. In this arctic location, I had unique snowy characters. This first world had all of the basic ideas for the upcoming ones. Most of my worlds' room ideas came to me while creating this world. (The random patch of grass on the left was because I didn't like having only snow).
Later on, I realized that one snowy game is enough and that having mine would be too much. I switched over to a warmer location with grass and bigger mountains and more trees. This world's colors were much better. Also, while some of the rooms moved to other parts of the island, many stayed put (some rooms were removed).
The location of these worlds changes them very much. If you are making or plan on making a world, try to choose where you want it to be. Otherwise you could be like me and keep changing it until you find a good place to stay.
Stay put
—Alex Eskimo