This world was just made for fun, but don't gt me wrong, It looks pretty good.
It has 4 main islands:
The biggest; a flat area perfect for building a town, surrounded by 4 mountains, so it has natural defense, as well as a forest on the east side.
lower left; a hilly area covered in snow, nothing too interesting.
upper left; an island with a set of two mountains, in-between which is a small forest.
upper right; just a mountain. That's it.
Information
This world was made with some custom brushes, and is generally just a bunch of snowy islands.
On the southernmost mountain on the central island, there is an area I flattened out a little bit, so you could make a small town there.
This world was made with a medieval village in mind, so that's why I made it have natural defense from other forces attacking you.
It was made for fun, but should still look better than a normal minecraft world.