Hi! I don't have a super solid grasp of JSON and/or how to make it work with Labyrinth. - but I do have a general grasp of programming which is how I extrapolated from your guide.
Writing your guide for people like me might well be nice - otherwise, could you help me troubleshoot my files?

The game doesn't like how my custom structures are formatted. ("Malformed JSON".) I know it's not the structure files as I'm not doing weird stuff with them though.
Error: net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Daedalus' Labyrinth (labyrinth)

My JSON files look something like the file "labyrinthcave1" at the end of the doc.

I aim to replace wool with various blocks/decorations
The rooms are relatively high, and have 2 blocks of floor instead of 1.

Thanks for your help.

{
"weight":3,
"size":
[
"SINGLE"
]
}

"up":3,
"down":1

"rotation":any

{
"original":minecraft:wool 3
"replacement":
[
minecraft:stone,minecraft:stone,minecraft:coal_ore,minecraft:coal_ore,minecraft:coal_ore,minecraft:coal_ore,minecraft:gold_ore,minecraft:gold_ore
]
"type":all
}
{
"original":minecraft:wool 1
"replacement":
[
minecraft:stone,minecraft:gravel,minecraft:gravel,minecraft:andesite,minecraft:andesite
]
"type":single
}