CanadianGran
I concur that you should go to a lawyer/solicitor. They think of things that you may not, and aren't terribly expensive.
An aunt of mine, childless, left everything to be divided between 11 nephews and nieces. Which sounds all very straightforward, but the will stated that if any of us should have died beforehand, our share should go to any children, ‘whether natural or adopted, legitimate or illegitimate’.
I expect that a solicitor advised this, to save any possible arguments in future. I don’t think I’d have thought of it for myself.
A bit different, but a friend of ours wanted to leave a house he owned outright, to a particular charity. His solicitor advised leaving the actual house to them, not the proceeds of the sale.
Otherwise, he said, they’ll be hassling the executors endlessly - why hasn’t it sold yet, why hasn’t it sold for more money? He was speaking from previous experience.
Again, probably not something I’d have thought of myself.