Oh, I'm very interested too! What did you come up with?
I'll post a screenshot when I'm home, but this is my inspiration: https://www.molendatabase.nl/molens/ten-bruggencate-nr-02775
I chiseled a column of 6 blocks into a taper an made a 5x5 square bottom. I lined the top with oak planks and put a thatch roof on it.
If I can't make this work I'll try something like this: https://www.demaasenwaler.nl/algemeen/algemeen/37372/onderhoud-molens-beneden-leeuwen-en-alphen