I want a better prompt for an ai to...

I want a better prompt for an ai to build my minecraft design: Okay I want a massive build. The rough outline ive given are between these cords. 1258/-114 1379/-220 (X/Z). I have indeed started the project and the first layer of deepslate only ends at Y lvl 160 and started at 128. What I WANT to build is the largest "minecraft block" but not symmetrical, not like a nomral block, no I want imagine multiple chuncks of the world just pasted on the top of the nether roof (thats where im putting it, obviously your only using normal world blocks) And so the whole idea is to go through the portal from the overworld -> the nether, and oh wait, it still looks like im in the overworld. Then I fly and it still looks like a giant overworld set of chuncks. Now i am building this in survival so its in