A while back there was a pattern in one of the Hawk Chalks that I wrote a program to generate. I have never actually tried making a hood from the pattern but would be interested to know if it works. If you would like to give it a try you can
download it here. If you do try making a hood from the pattern, please post a picture.
Note: This program will only run a Windows base machine and was written during the WindowsXP time so I'm not sure it will run on Windows Vista or Windows 7 but my guess is it probably will.