First class product
As with all screen protectors, you just need to make sure you're in a completely dust-free environment, and follow the instructions closely, taking greatest care to ensure correct positioning when lowering onto the phone. I believe this protector uses adhesive to hold it in place, so I doubt it would lend itself to being easily repositioned if you get it wrong first time. I found it to be very sticky from the start, but luckily I got mine lined up perfectly first time. That was a relief. The end result is excellent though, so it's very much worth taking the time to get it right first time.