Tattooing is not a quick process, nor should it be rushed as you will be living with the results permanently. An averagely complex piece of work about the size of the back of your hand, usually takes about two hours to complete. Larger or more complex pieces can take tens of hours, and will require several sittings to complete. Usually, appointments are made in multiple hours, but some smaller pieces may only require a thirty-minute appointment. A full sleeve (done by any decent artist), could take anything from ten to fifty hours of work to complete depending on complexity.