In the PDF below i included three templates: for the six, twelve and 32 lamp versions. These are all generated from a python script in the Maya software. I calculated that the largest sphere that could be build has about 120 lamps and i would love to build that one; but it will be heavy and bright and probably needs some serious thinking on the structural integrity. Drop me a mail if you are interested in having one.
See the flickr set for more pictures and my log.
Step 1: Tools
You can use a clothes hanger to mount the lamp on the ceiling.