Okay I do apologize for not returning immediately to show the final picture of the Seat protecter. But here is the final picture! Nothing grand by all means, but hey! it works!
I cut 4 slits in the top and thread a ribbon through them. Then I tied the ribbons around my head rest. Works like a charm.
I may stitch in 8 inches on either side and then up to the top for the simple fact that my son decided that it should be a cup holder as well as a seat protecter! I had to dig out his cup a few times :)