Install the Fabric Loader for the same Minecraft version you plan to use.
Download MaLiLib and Litematica from their official project pages. Place both JAR files in your Minecraft mods folder.
Launch Minecraft with the Fabric profile, open the Litematica menu, and confirm the mod loads without dependency errors.
Download a schematic from Darky’s Schematics and place it in the schematics folder inside your Minecraft directory.
Use the Litematica Load Schematics menu, choose the file, create a placement, and position or rotate it before building.