I put these 2 images together from a set.
I used 2x Profoto B1's, B1x and 2 constant light ringflashes for the shutter drag.
All shot at 1/8 and F5.6 at 55mm
A hint would be to use a longer lens to accentuate the shutter drag if you are using a stronger constant light that doesnt allow you to open the shutter for long enough.