Hey joebods, there is a mistake in what you beveled in Save 8:

This shows in your chest for instance here:

Forget file 8 and work from Save 9.
Carefully select all the edges that should stay ‘sharp’ (this might well be the hardest part of this course..)
Then (after double, or even triple checking) Bevel them slightly and then re-bake the DVC.
I’d use at least 2 subdivision levels, but probably 3, or maybe even 4.
The DVC is definitely showing up, but it will do most of its magic when you actually make the shaders.
You could also increase the contrast of the DVC by inserting a Colorramp:
