This last picture shows the whole mantel. The mantel has a shelf cover over the original shelf so that I could attach nails, staples to it for the greenery without damaging the wood underneath. In reality I could lift that dark mahogany stained over shelf off with all the decor and restore the mantel underneath to its original non-holiday status.
Link to post where I showed how this top mantel shelf was made and applied click here. And on my Home Projects Blog (where I post my projects in more detail) are more instruction and pictures click here. Thanks.