|I think this is an excellent effort to organize and document the systems of magic you use in your writing. While there are many systems out there, with differing levels of organization or coherency, it seems important to clarify to yourself what works, what costs, and the source of everything.
So, absolutely, a very good exercise for an author writing fantasy. Well done.
One possible way you might want to expand on this a little is in the area of attribution to or consistency with "canon". (I know there isn't one canon, but bear with me.) If you you extended each section a little to mention how this form of magic reflects or contrasts with other popular systems, it would help you focus on what people might expect and thus need more hints about. For example, the concept of Time Lords is obviously used in Doctor Who (and possibly others SFF novels - I don't know). If your section on Temporal Magic mentioned that, it could then lightly describe where you were consistent and where you were not. That might then help you in writing to highlight (subtly) the differences, so your readers wouldn't assume something else. It would also help if you needed to mention something in your Acknowledgements about the similarities.
Good work, and best of luck in your quest to become a Best Selling Author.