Enjoyed myself last night playing with painting with light. My "patient" model was a 1968 Ford Shelby G.T.500KR in 1/18 scale. Not a very detailed model but good enough for low light work. My flashlight was a 3 LED model. Exposure was set to bulb and f-stop to 18. And then you just guess it from there. I've tried a number of techniques like lighting the car from the back etc. but for this shot, I aimed the flash at the nose and side and then slowly moved the around the back of the car making sure not to have much light fall on the bodywork. I am pretty pleased with the old border look adding to the period of the model.
Canon 600D, Tamron 18-270mm f3.5-6.3 Di II VC PZD. Focal length 39mm, Exposure 24sec at f18, ISO 100, Focus manual, VC off, Flash none, Filter UV.