The seam tape will probably not work both because of the heat and because the wire will make it difficult. Do you have a hot glue gun? That would probably hold it. I'm trying to visualize what you mean by "to the backing of my new tree skirt". Why would you want it attached to the back? Are you putting it on the front of the skirt then hiding the end on the back? How long will the piece on the back be? I know you don't sew but could you just take a few stitches with a hand needle to hold it in place?
The ribbon is beautiful.
With all of our running and all of our cunning, If we couldn't laugh, we would all go insane...
"Changes in Attitude, Changes in Latitude" Jimmy Buffet