Western Saddle Making

How do you make a western saddle pad out of wool?
I am looking to learn how to make a western saddle pad out of wool. Can anyone tell me how to do this or point me towards a website (hopefully with pictures) that can teach me?
Thanks!
Thank you for you're answer. I understand the importance of a good saddle pad. I have seen then made though and wish to know how to do it.
Get a heavy piece of wool at least 30x32 inches the pad must be layered for thickness, it needs to be at least 1/2 inch thick, cover it with a heavy material and sew them together.
