So this is the sort of thing I'm looking at...
Silicone Casting Mould Open Flame | Etsy
Latex Mould to make Round Flower of Life Wall Plaque Mold for | Etsy
(There are a million variations on the theme, but it gives you some idea).
Although those videos do make the basic technique look easy... I'm guessing they don't show you all the times their attempts went wrong!
I had to look up "Flower of life",
had not heard of it before.
Found that it symbolizes seven days of creation, which is a bummer.
The world was created in six days,
the seventh day the Creator rested.
Or so it reads.
I'm also wondering about colour; I understand you can buy dyes to add to cement, but that adds another layer of complexity again.
Casting resin looks like it can give amazing results but descriptions online leave me thinking it's probably not a beginner's technique.