In the Zip, the folder structure is already given.
– Path: Farming Simulator 19 \ …
– Then copy out the respective textures and copy them into the original directory and replace them!
– For me it would be under:
Round Bales:
C: \ Program Files (x86) \ Farming Simulator 2019 \ data \ objects \ roundbales
Square Bales:
C: \ Program Files (x86) \ Farming Simulator 2019 \ data \ objects \ squarebales