Hello Sue,
I know you are in the south of France, But if I were you I would try to find someone who has a CO2 laser to do the engraving.
carving lettering that looks good is a skill that is not learnt in a couple of days, with a Dremel or chisels.
Try googling Laser engraving services in your locality, It'll save you a headache, have a perfect result and will probably cost less than investing in a set of carving
or pyro tools.
I make pens and Golf trophies, and any engraving that is needed is always done with a laser.
I am fortunate that I have an engraver that is in reasonable driving distance, so if you can find one reasonably close to you I would seek them out.
Good luck!
john. B