The State of Tennessee’s website has a page all about the health care documents that are valid here. They even have slideshows and other materials to explain each one.
As I am not an attorney, I can not prepare documents for you. It is my understanding that I can give you a link where you can get them for yourself, especially as the link goes to a government website.
So, please feel free to visit the State of Tennessee Advance Directives page here: http://tn.gov/health/article/advance-directives