Venetian blind valance clips fitting 

Love to see a vid showing how to prise the 2 parts apart with a screwdriver.. I'm about to use so much force I know I'm going to snap one removing it! In fact one leg has already snapped off so I'm hesitant to try the same screwdriver method again without seeing more. Thanks in advance!

Good video but how do you separate the two pieces of the clip? They seem to be "barbed" and I don't want to force it because it will inevitably break.