According to my tests, the results might be better if your camera shoot is under-exposed.
use ISO 100, this will prevent noise.
see: http://1024d.wordpress.com/2011/08/09/m ... -tutorial/
for a tutorial, using a crappy 300 lumen projector, a Canon 500D, and very bad conditions: it works nicely:
the artifacts are due to the white surface, being way too reflective. However, on the dwarf, the picture is OK.
When I look at your image carefully, I barely recognize a pencil and two porcelain cups (highly reflective). If I'm correct, you seem to be too close to your subject, and if you're shooting 2 cups and a pencil with a 7000lumen, there will be too much reflection.