MTrenk, thanks a lot, I am glad to have any and all help I can get.
To make things a bit easier to visualize and understand where I am coming from. Here are some pictures of my car.
The earlier "partial" kammback
Side profile, Due to space I couldn't get any farther back, and it is a little bit too high of a view for using the template, but still gives a rough idea of what I'm working with.
You can see how the rear bumper extends another few inches past the rear of the trunk lid. I might try to angle it rearwards at the back like Chaz has in his picture of the white Neon, I can go a few inches past the trunklid, without going past the bumper.