Quote -  Download the attached file and then change the .txt suffix to .zip and decompress the file. Have fun!

Thank you, Mark!

I did point it in the wrong direction in my scene and that's why it didn't work. I see in your scene (it did ask for kitchen HDRI when I was loading it, but its lack does not seem to be making a difference) that the true shadows are still black, so it should be a matter of compensating the most shadowed area of interest  with the spot's direction. Is that the right idea?

I look forward to your tutorial in 3D World. I've been following the other thread with your WIP and I'll be very curious to look under the hood of it.

General lighting tricks are useful and important, but since every application has its own quirks and limitations especially where lighting is concerned, Carrara-specific lighting tips are especially valuable to me. So thank you again for the tip and for making the time to make a sample scene and upload it!