Basically, you don't have to be say, entirely introverted or intuitive, you can have some sensing or extroverted tendencies. You can go through the questions in the other sub-pages and ask yourself if you are one or the other. You can have maybe two or three on the other side but if (Almost) all of them are different then you might have messed up your type. If you want more in-depth detail watch the Frank James video titled "What are the VARIATIONS of the 16 personalities?"