I often build Map Arts in survival to display in Item Frames, but doing so can be time consuming. To solve this, I break it up into steps. If you use https://rebane2001.com/mapartcraft/ to generate a flat (no staircasing) nbt file, you can paste the schematic into this world, and the command blocks will split it into 3 seperate steps. You then create 3 seperate litematica files you can overlay onto each other in survival, and build step by step!
Video tutorial coming soon: youtube.com/colonal
