4 wing footings requires either a REAL lot of patience with a small hand saw, or some additional equipment (some of which you can make yourself).
I do believe there is a build-along somewhere showing this process. I am also fairly certain that there was an earlier article in Traditional Bowhunter mag about this process, I believe by Jason Wesbrock of Illinois.
I suggest you try to find these first. The process is not so hard to DO, once you aquire the "stuff", but it is more difficult to walk you thru it, especially all the little stuff.
ChuckC