Here’s how I got this shot.
I took an Elinchrom D-Lite 4 with a big beauty dish and gold reflector, put it on a boom arm on a C-stand, and had it camera right. It was quite a distance from the model, so I cranked it to full power (400w/s).
I put a Nikon SB900, put it on a light stand with Honl grid, and zoomed it to 200mm. It was quite close, so I powered it on manual to low power (1/64 or 1/128). The SB900 was set to SU-4 mode, so it would fire when it saw the Elinchrom fire.
The camera was set to ISO 100, 1/200sec, f11. I think the Elinchrom metered at f8, but if I had listened to my light meter I would have overexposed the background and the punchiness of the light I think is just right.
There was minimal editing of the photo, just a horizontal crop and a slight change to the white balance.