Fanfiction?

I am currently a fanfiction writer but I am also in the process of making my own book.

What is a fanfiction?

Fan fiction (alternately referred to as fanfiction, fanfic, FF, or fic) is a broadly-defined term for fan labor regarding stories about characters or settings written by fans of the original work, rather than by the original creator (en.wikipedia.org/wiki/Fanfiction)

I am currently a fanfiction writer for TMNT, for example.

Writing fanfictions is a good way to be creative if you can't think of your own characters to make a story or its a good way to practice before you start making your own stuff.

Are you a fanfiction writer and, if not, would you be willing to become one or is it not for you?