Headlining Mushrooms

Forum: 

I am about to try and remove the headlining to my Fourtrack independent as a prelude to taking the back off. Does anyone have any tips on how to, carefully, remove those mushroom like clip things that hold the headlining in - preferably without damaging the headlining or the mushrooms?

Have used one of these

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'12' Plate Mazda MX-5 2.0 litre NC 3.5 Venture Roadster 160BHP
'15' Plate SEAT LEON 184 FR TDI. 240BHP/500nm Torque.
Past: '53' Plate Yellow YRV Turbo Approx. 150BHP