QuiltBea ... lovely Quilt!
What about instead of a square that becomes a snowball ... use a rectangle with the same technique and you'd have a football shape??
BCaplette ... did you try Google?? Often times we can find what we want there ... or as already suggested, use the search function here on the Board?
Or perhaps use some graph paper and develop your own pattern? that can work pretty good!
Maybe this will help
http://www.lmgtfy.com/?q=football+quilt+patterns