Shop around for artists. The biggest mistake people make is designing their own tattoo before picking out an artist. That design is going to change because no two artists will draw the same object in the same way. Every artist has their own style and flair. Pick one you love based on their style, and work with them to visualize your ideas. If you want a shark tattoo, and the artist doesn't have a shark in his/her portfolio, it doesn't matter. Every artist can draw a shark. It's how they draw it that matters. Once you pick out an artist you like, do some research on what makes a good tattoo artist and see if they check off everything on the list. Aside from style, professionalism and personality are equally important factors.
These instruments are also remarkably similar to much later tattooing implements used in 19th-century Egypt. The English writer William Lane (1801-1876) observed, "the operation is performed with several needles (generally seven) tied together: with these the skin is pricked in a desired pattern: some smoke black (of wood or oil), mixed with milk from the breast of a woman, is then rubbed in.... It is generally performed at the age of about 5 or 6 years, and by gipsy-women.”
The American Academy of Dermatology distinguishes five types of tattoos: traumatic tattoos, also called "natural tattoos", that result from injuries, especially asphalt from road injuries or pencil lead; amateur tattoos; professional tattoos, both via traditional methods and modern tattoo machines; cosmetic tattoos, also known as "permanent makeup"; and medical tattoos.