The best way to become a tattoo artist is to find an apprenticeship. The mentor you choose should be an artist
who has years of experience, someone who knows tattoos and the business of tattoos. He or she will be able to teach you how to create a tattoo on a person from ideas in the mind or on paper. You will learn the proper use and cleaning of tattooing equipment,how to use and blend inks, and how to follow all of the necessary safety procedures. In addition to this, you will learn the many other things you will need to know to work successfully in the tattoo business. 

An apprenticeship will usually last up to three years. During this time, you will not be paid for any work you do. You will spend your time learning, watching, cleaning and practicing. At the end of your apprenticeship, you will have learned all you need to know to take on clients of your own.

To get an apprenticeship, you have to ask for one. You may even have to pay for one. Even if you are offering a fee, it may take some time to find an experienced artist who will take you on. After all, it takes quite a bit of time to personally train someone in all it takes to be a tattoo artist. Don't take just any offer if you think the artist has not enough expertise to train you (especially if you are going to pay for the favor).

When searching for an apprenticeship, prepare a portfolio of flash and any other artwork you may have. Any artist who considers you will want to see your ideas and how well you can draw them.

Once you have found a mentor, there are several steps to take. Before you agree to anything, make sure that the terms of the agreement are fair to you as well as to your mentor. Have a legally binding contract that will protect you as well as your teacher. Anyone who is unwilling to sign a contract is someone you don't want to work with.