That is a pretty good standard of file structure Charles and a good starting point for anyone. It is when you don't do this sort of structuring that things start to become a dogs breakfast.

If a photographer doesn't take heaps and heaps of photos, a bit like me, putting the folders into years and then months under that can be a useful way of structuring as well.

The thing to remember is to keep the description to something you will be able to understand sometime in the future, not have to guess what you were thinking about at the time of creating the structuring.