Friends and the DIY soft box
Friends visited, just as I had constructed a soft box out of an old cartoon box, some tape and a sheet of sandwich paper. They agreed to sit for me while I tried it out.
I think I need a stronger light, even if I managed to cut the exposures to 1/2 second at f8 I saw some motion blur in a couple of the pictures, and I probably missed focus a couple of times as well due to the dimly lit scene.
But all in all I am pretty pleased with the results of the experiment.