Dear Scott,
My name is Luis, I'm a construction engineer working as a Project Manager in London.
I have worked with AutoCAD for a long time and I am pretty sure I can do the template for you and what is best, I can explain you how to work it out on your own and maybe assist you on the first times you use this method.
For what I understand, the data you need to cut perfectly the glass is (assuming a rectangular piece) the 4 dimensions (top, bottom left and right) and the angles of each corner, isn't it?
if that's so I can definitely help you to bring that to autocad and once it is in DWG format you can figure out everything you might need about your glass (diagonals, angles, middle points, areas...)
If that's what you need do not hesitate to give me a call, I can also negotiate the bid if you don't need the further assistance after I give you your template.
Best regards, looking forward to hear from you.
Luis Andoin