Difference between basic and fundamental

Basic, fundamental, and elementary are interchangeable words, I know,
But I'd like to know when can I use them. For example,

Once a teacher demonstrates the _________of drawing, painting, sculpture, and so on

What can I put in to the blanked-out word? Basic? Fundamental?

The basics of drawing, etc. :  this is what you should say.

The fundamentals of drawing, etc. :  you can say this, but it applies more to a theory than a practice like drawing.