This is not really a good way to organize your documents. You should think of the folders in in the TeX Live directory as equivalent to folders that belong to a particular application, and you wouldn't normally store your documents created by that application with the application.
So you should generally not keep your documents inside the texlive folder at all, but wherever makes sense for you within your home folder, just like any other documents you might have.
The only things that go in the texmf-local folder are local packages and TeX related stuff that is meant to be accessible to multiple users on a single machine. If you are the only user, there's little need to use this directory at all, but instead should use your local texmf folder. On a typical Linux system, your local texmf folder is located in ~/texmf; on a Mac, it's ~/Library/texmf; in Windows it's \texmf in your user folder. See How to have local package override default package for some more information on your local texmf folder and how it is used and organized.
So here's a basic organization first Linux/Mac, then Windows paths:
/usr/local/texlive/<year> Windows: C:\texlive\<year>
- Used only TeXLive; leave this one alone
/usr/local/texlive/texmf-local Windows C:\texlive\texmf-local
- System wide additions to your TeX distribution
/texmf (Linux); ~/Library/texmf (Mac); %USERPROFILE%\texmf (Windows)
- User additions to your TeX distribution
Any other document that you create (i.e. any regular user document created with TeX) should simply be placed in any folder that makes sense for your personal organization. For example, I have a folder for each course I teach, and subfolders for different semesters. I have folders for research topics and then subfolders for articles I'm writing on those topics. But these choices are very personal, and you should place your TeX documents in whatever folder structure makes sense for you just like you would any other kind of document you produce.