I was a little bummed when I first applied because there was just a small bubble of nothing in the area that had formed. For the sake of perfection I resoulevé the film to release the little dust. Instead I had other dusts that have crept under the film.
I decided to throw the first and use a second and I posed as quickly as the first except this time I did not retouched and even if there are two bubbles, they are not annoying and my screen is well protected.