The Mégane II Owners' Club

Hi, I would love the ability to hear my horn so i have decided to change it. i believe it is situated between the bumper and radiator and one has to remove the front grills to get in. i am just struggling to get the grills off as i do not want ot pull them to hard and snap them off nor force anything in there. can anyone explain where the clips are and which way they have to be moved to release the front grills? sorry a bit of a stupid request but rather safe than sorry.

Cheers