Before you start making your own empty island, you have to make the main settings:

First of all, after you start the game, you should be able to find the "SkyblockBuilder" folder in the config directory, and then find the "SkyBlock" folder in it.If not, just create it by yourself)

Enter the following code in "Forge-COMMON.TOML", set the world type of your single game to the default value

[general]

DefaultWorldType = "Skyblockbuilder: Skyblock"

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Create a custom empty island

General configuration file

First make an empty island, you can try to make a small building first

Use your "Structure Save" tool (find the icon of the blue drawing in the tool classification interface), and select your empty island with this tool (right -click the first setting start range, set the end point position for the second time position position) After the selection, it will automatically save you. You can find a ". NBT" type file under the path of "/SkyBlock_exports/"

Copy and paste the files of " .nbt" that you just generated to paste in this directory

 config/skyblockbuilder/templates 

Find the "Templates.json5" file in the "Config/SkyBlockBuilder/" directory, first look at the first part

 {{

"Spawns": {
"DEFAULT": [[
[X, y z]
]
}
} 

The first part is used to set your default birth position, "x, y, z" corresponds to your coordinate shaft, you can use F2 information in the game to view

 {{

"Templates": [[
{{
"Name": "default",
"Desc": "DEFAULT TEMPLATE",
"File": "Default.nbt",
"Spawns": "default",
"Direction": "South"
}
]
} 

The second part is the map selection phase of you before entering the game. The explanation of these rows can be seen below:

"Name": This line corresponds

"DESC": Select a line to correspond to the introduction "File" on the screen when choosing a world type: This line is the file name of the data template you chose

"Spawns": This line corresponds to the default setting of the birth of your choice. The birth setting is the part I wrote at the fifth point just now

"Direction": This line corresponds to the direction of you viewing the map template

Box settings on the island

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If you want to set a box in the map you created, then you need to set the NBT data to the box, you can use the following code to set:

/Data Merge Block  {Loottable: Modid: PATH/To/LOOT_TABLE} 

Note: If you have merged the data into the box, then you can no longer open the box!

Modify your map template icon

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If you want to modify your map template icon, then you can find in the following path

 Config/Skyblockbuilder/Templates/Icon/ .png.