This shot was staged in total darkness and captured by a 15 second long exposure in order to capture the background city lights, the stars and clouds - then have the Flash speedlights trigger at the conclusion of the long exposure.
Only two flash speedlights were used – a GODOX AD200 Pro II Strobe Flash (Bare-Bulb Head) + AD S2 Round Flash Head and a Reflector with Diffuser kit + a GODOX AD200 Pro + H200R Extension Round Flash Head.
The image was captured on a Nikon D780 + VR 24-120mm f/4G @ 28mm f/4.0 15 sec ISO 1250. Processing was applied using Lightroom.