RE: Fiber Optic Light Painting Portraits

Holy crap, how have I not seen your work before?!

Is this just a fibre optic curtain that you're using, or it something more bespoke and custom?

How do you deal with light spill onto the backdrop / environment (heaps of black flags, I guess)?!

Sorry for all the technical questions, but I want to seriously make an attempt at something like this in my garage at some point.

So ephemeral and ethereal!