I want to try this for a very long time, after viewing my friend's picture, Fathie D. Now I have the opportunity to try it. I set my own room for the experiment. I switched off the light, and is totally dark, with only few lights enter from the outside. I'll made few attempts, but the picture below is the best that I can get (well, it's my first attempt anyway).

Here are the set up that I use:
Mode: Manual
ISO: 100
Shutter Speed: 20 second
Aperture: F11
Other equipment: Tripod & Shutter Remote