Pulling out the tape player

hi there.. i been trying to pull out my tape player from my 97 coupe... any advice.. is there a technique or a certain place i shud b putting keys/knife ...

i have got a wiked stereo as the original one cant hold an amp

i have done this now... was quite a long job.. had 2 pull out the whole center part around the stereo all the way to the surround around the gear stick but its all good now.. got rid of the useless tape player.......