Make Awesome Control Panels and Signs With “Gravograph”

This excellent article from CNCZone taught me a new method where the writer used a "Gravograph" to create a stunning CNC control panel.

And here is some work in progress:

This engraving material is a laminated plastic, that has a self-adhesive to make it easy to stick to aluminum or whatever the real structural material for your panel might be.  The plastic has a layer of black that is 0.012" thick and then white underneath.  Set your engraving depth to just a little deeper (say, 0.015") and look for great looking results like these.

What are you secrets for great engraving jobs like this?