How to remove the trim of my Avants trunk
 

Hi everyone, I have been unsuccessful in removing the trim in the trunk of my 2001 A6 Avant. I'm trying to find out if my Bose stereo. If it is not working I'm going to put in a sub of my own. If anyone has ever done this (taking the trim off). Please let me know. I have taken off all the screws that the manual told me to but I don't want to bend or worst break the panels.