Tech Specs: Canon 70D (F11, 1/20, ISO 200) + a Canon EF-S 60mm macro lens with 37mm of extension + a diffused MT-24EX (+1/3 FEC) with head "A" set as the key and head "B" as the fill. This is a single, uncropped, frame taken hand held.
Technique: I used a syringe to inject 2:1 sugar syrup into a Basil flower. Ignore the shutter -the flash is the only significant light source on the subject. I dragged the shutter to expose the background. I shot this scene with the camera held horizontally but framed it, and adjusted the position of the flash heads, for a vertical shot. To me it's easier to take portraits with the camera held in a landscape orientation.