One thing I found while doing this job is that if you remove the torx screws from behind the wood trim and the inner door handles you can just pop off the panels from the top like the original diy above more easily. This allows a little more freedom for working at the top of the panel when you are taking the rubber/felt seal in and out. You can leave the panel fully clipped in on the bottom so there is no need to support the panels as when you take them all the way off.
When I did one door with just pulling from the top clips and not taking anything off, they do pop out but I ended up putting a very slight crease in the panel as it must bend to allow the top out but keep the rest tight to the door. I thought the removal of the torx screws only was a nice compromise between this DIY and the full panel removal method as mentioned in the tintprotector.com instuctions.