even flat surfaces can be squeegeed.. (makes no sense that they couldn't.)
LOTS of liquid to allow it to slide around on the glass without sticking or creasing. A friend to help guide the tint, and a handheld propane torch to seal it will eliminate any excess bubbles, and gaps.
14' Bay windows are a PITA and they came out without a single bubble, or crease.
I did the windows on my car.
20% all around............



Practice makes perfect, and your first attempts should not guage your future. Try on something a little less "important" to you, like a glass out of a picture frame... then move to a large mirror.
you'll be a pro in no time (that is, if you choose to try again.)
Ray