The first step in making a holster is designing the template. Use an old manilla folder for this and don't forget your imagination.
Here are the links to the youtube videos I made:
http://www.youtube.com/watch?v=RP-3Wh0Gv2Q
http://www.youtube.com/watch?v=6pC-btj28_U
If you are having trouble downloading, try this backup source:
Episode 17: Making Holsters 1 - Paper Template