Awesome map i found all pieces of wool. In snow village i was confused . I went first trough the cave and the stalagmites then i realised that this was the main path and that structure with golden blocks was optional, i went back. About the nether level piece of cake ,i did it from the first try. It took me one hour to finish the map It was fun! Also i found outside the map xD your chests with stuff ( used iron armor etc) + some sort of a highway.
Lol! I had writers block, but with building. That highway was a tape measure for shooting a bow as far as possible, my record was 118 blocks!