Gilding is an art that has come down to us through the centuries. The technique, tools and materials used today are the same as those used in the middle ages, with very little variation.
The gold leaf was used in history as ornamentation, paintng and decoration. For instance in ancient Egypt it was not only used for religious purposes in temples, it was also used for furnature.
As with everything, practice makes perfect, and learning to gild takes time, patience and lots of practice.
I am truly lucky in what I do, I really love to gild, work on restorations and painting.