Not every idea will work...

So I bought these glass gems at Hobby Lobby at 50% off:

I was inspired by this:

I have a mirror (12" x 48") whose cheap plastic frame broke.  I figured I'd buy a sheet of plywood, cut out a piece 24"x76", and make a headboard.  I bought some flush-mount brackets last summer, anticipating a headboard project.  When I described my idea to my landlord, aka "Dad", he took one look at my brackets and killed the project.  He didn't think the brackets would attach to the studs properly.  He has a valid point...  As soon as I can figure out a smart alternative, I might get the project done.