Take your suitcase and give it a wipe down with wipes.
I went right to work with laying the transfer down and rubbing it on! But to my surprise, things took a turn and it came right back up with the plastic. That had never happened to me before! So on to Plan B.
Take your top coat sealer and paint a layer on the top of your suitcase
Dry your top coat with a heat gun.
Lay your transfer on your painted suitcase.
Lay your transfer over the surface and rub it down with the stick that came in your transfer and/or a transfer tool. That did the trick!
Peel off the plastic sheet of the transfer.
Seal the transfer down with more fusion top coat.