Bu there is only one complete prayer given. Christ did not say "this is one of the prayers your should pray..." He said 'this is how,/i> you should rpay.'
There are many other examples of prayer in the bible, especially John 17. Since we are warned against vain repetitions and since the other prayers are not clones of the "sample" prayer it pretty much shows that we are not to repeat the "sample prayer" as written. That shows that the sample prayer is an outline of topics. What's really interesting is that the Lord warns against verbosity since God already knows what we need before we ask.
All of these things really make vain the idea of asking dead people to pray for us. The is the epitome of vain and repititious. Not to mention there is zero scriptural precedent for it.