How do you think can a woman become a good plumber? I am wondering because it is very well paid. But I am not sure if I will be able to do it.

If I become a plumber should I upgrade my license after some period?

There are many apprenticeship opportunities that a Plumber can start with for his career. This is even more possible once he has basic qualifications, such as GCSEs, City and Guilds, SVQs or NVQs. Some apprentice start in their early teens or even right out of high school.
Plumbers study areas such as:
•    Mechanical Engineering
•    Plumbing and Domestic Heating
•    Gas, Oil, Solid Fuel and Environmental Technologies
One requirement that potential Plumbers must be aware of is that, they cannot be colour blind. There are restrictions and vision assessments administered to check for this. There are also several associations that offer membership to Plumbers. They are:
•    Oil Firing Technical Association (OFTEC)
•    Chartered Institute of Plumbing and Heating Engineering (IPHE)
•    British Plumbing Employers' Council (BPEC)