Just wanted to thank everyone who chimed in. Especially Ivleph and Griz. I am not a math wiz like you guys, but I am of the opinion that every little bit of exposure to something that you are not good at helps improve that skill.
I understand that cutting and sewing will cause imperfections that are outside of anyones control, but I was just curious as to why the cat cut was not symetric about the axis. Now I understand.
Thanks again. Off to make my first cat cut pattern.
BTW... If anyone is interested....If you live near the headquarters of your local newspaper they sometimes have long, wide rolls of blank paper called "end rolls" that are GREAT for making patterns. Fortunately for me I also have a buddy who works at the dynomite factory. They have the same type of thing (large wide roll of paper) but it is much thicker and IMO easier to work with.
Just and FYI.