Removing rear offside door panel

[buildersbutt]

Hi all, as above on a Vauxhall Omega Elite V6 1999 V plate. Taken out six screws around the edges but now stuck have looked for a Haynes manual but they all seem to stop at T reg would this be ok? Your thoughts on this appreciated, thanks for your time!!

 

[Belle427]

Usually there are quite strong pop fasteners in there too so a good sharp pull starting at a bottom corner should start to release them.
I usually have a large screwdriver wrapped in insulation tape ready for this to get in between panel and door frame as a lever.