Okay, create a new world.
In the world options, switch the world type to Superflat and click Customize. There, click Presets. Now delete the text in the box at the top and I'll show you what you can do with the basics.
Tips:
Do NOT go over layer 255. Or Minecraft will crash.
The order of layers is from layer 0 to layer 255(left to right).
The last statement does not need a semicolon at the end.
Now let's get started!
Type in the box to start 2;. This says, "Hey, I'm using superflat."
Next, after the ;, type an id (Ex. 7(Bedrock)). Don't type a semicolon this time; instead, add a comma for an extra layer.
Now here is how to make a block in multiple layers. Let's say you want to make 2 layers of dirt. Type axb,. a is the amount of layers the block will have, and b is the block id(0 - 255). We're done with that.
We're going to top it off with a grass block layer(yes, we're making Classic Superflat). This time type 2 and close it with a semicolon. It should look like "2;7,2x3,2;".
Now for some biome decorators. Type 1; after the last semicolon. Then add your decorators.
Here is a list of some of the fun ones:
village: Villages will spawn in your world.
stronghold: Strongholds will spawn in your world.
mineshaft: Mineshafts will spawn in your world.
lake: Water lakes will spawn in your world. Try adding the prefix lava_ for lava lakes.
decoration: Biome decoration will spawn(Ex. Trees, tall grass, etc.)
dunegon: Dunegons will spawn in your world.
I very much thank you for reading this post, and if it helped please say so.


















