there are six months, three months and one month.

Students with zero foundation may master the basic skills in about one month, so they are called cake decorators, and can only do some simple cake decoration.

It takes about 3 months for an intermediate paperhanger to independently undertake complex paperhanging tasks.

It takes about 6 months to be a senior paperhanger who can skillfully operate complex paperhanging tasks.

decorator: The pastry maker in the bakery is called a decorator. His job is better than that of the artist who makes food. He should not only make food, but also endow art.