Is there ANY way to fit these things properly?

Just bought a new pack of 12, ended up throwing three away. The 4th one is on sort-of OK, but I can't for the life of me figure out how to avoid fingerprints in the adhesive while still aligning perfectly and avoiding ripples near the edges.

The last attempt was to peel on edge of the backing away from the protector without touching the protector itself, and then stick that edge down and use the squeegee-card to SLOWLY smooth the rest of it down, peeling the backing away as I went. This at least kept the adhesive clean, but it's really difficult to align properly. As it is, the top edge of the protector folds up very slightly, but I ain't gonna mess with it again today!