make it as it is. The bottom layer ...

make it as it is. The bottom layer only use prismarine blocks all the blue you see use light blue stained glass. the metal fram at the bottom of the structure use deepslate. on the middle area the white structure use quartz. on all purple areas use purple stained glass. the empty areas leave them empty dont fill them in. the green areas use prismarine. only use orange and yellow on the orange and yellow bits no where else. Deepslate stays at the bottom and on the pathways