Great artists like Leonardo da Vinci, Vincent van Gogh and Rembrandt did not achieve greatness by being overnight successes on the canvass. They took time to hone their talents and master their skills spending most of their time learning. They exhausted their patience and even spent a lot of money in doing so. So if you're really interested in becoming a shoulder tribal tattoos artist you can start by aiming to become a great one.
As a shoulder tribal tattoos artist, you have to keep in mind that your canvass which is the skin is unlike the traditional canvass. It doesn't allow for imperfections as this would mean lack of skill and expertise on your part. Practice with a keen eye, a steady hand and an imaginative mind. Work with precision and aim for perfection.