you need fab lighting,
20/20 vision,
very steady hands,
adhesive with no fumes/vapours,
plenty of time to do them in,
plenty of experience in applying them for others,
and nerves of steel, using 2 sets of tweezers near an open eye :lol:
i did myself a set a couple of week ago so i could advertise them to the clients for the xmas season,
they are not perfect but they are working for the ad lol,
i have a pic in my album if you want a look