Not much too it. Just clean the application surface and then do a final clean with isopropyl alcohol. Then, you can do a wet application where you spray water with a few drops of dish soap mixed in. Spray it on the application surface and the adhesive surface. That should allow you to move the sticker around as you get it into final position. Squeegee the water out with a rubber wedge or a credit card wrapped in a thin microfiber cloth. You can promote drying with a heat gun or blow dryer. Just don’t get the material too hot or it will melt/shrink.
If needed, go to a vinyl wrap or paint protection film shop and they should be able to apply the material for you for a minimal fee.