First I left some to go over the lip and I thought the sillpaltes would hold it nice, but it ended up that they got to high and the door panel got stuck everytime I opened the door. So I cut them just enough to be even with the lip and still be covered by the sillplate. I don'y know what's correct, but thats what I did.
Have to be very careful there, it's easy to cut to much, I waited with that until my seats where in, and I also pushed down on the carpet as far as possible
between the seats and the door opening so I wouldn't cut too short.
Under the back seat I left enough so I could cut holes for the backseat hooks. The rear side panels, I think I left too much there, it was hard to tuck everything in, probably have to cut some more off later, I'm gonna leave a few inches to go under the panel.