To speak about professions, you need the appropriate vocabulary. Part 1
Actor - someone, especially a man, whose job is to perform in plays and films;
Actress - a woman whose job is to perform in plays and films;
Astronaut - someone who travels into space;
Author - someone who writes a book, article, etc;
Baker - someone who makes and sells bread, cakes, etc;
Barber - someone whose job is to cut men's hair;
Beautician/cosmetician - someone whose job is to improve people's appearance by treatments to their hair, skin, etc;
Biologist - a scientist who studies biology;
Bricklayer - someone whose job is to build houses, walls, etc with bricks;
Bus driver - a driver of a large vehicle that carries passengers by road, usually along a fixed route;
Butcher - someone who prepares and sells meat;
Caretaker - someone whose job is to look after a large building, such as a school;
Carpenter - a person whose job is making and repairing wooden objects;
Chauffeur/driver - someone whose job is to drive a car for someone else;
Chimney sweep/chimney sweeper - someone whose job is to clean inside a chimney, using long brushes;
Draper - someone who, in the past, owned a shop selling cloth, curtains, etc.
He is a popular author of children's fiction
Can you call at the baker's and get a loaf of bread?
Dad goes to the barber's (= the barber's shop) once a month.