Have been looking through the new Floral Punch Craft book (IX, blue cover) by Leone Em and made these two large flowers at The Glitter Pot a couple of weeks ago. I love the Gerbera though it did take a lot of fiddling about with lots of different sized circles and plenty of cut up petals from the Woodware purple sized daisy punch.
We used black flock for the centre of the Gerbera and for the Marguerite Daisy we used yellow fluffy stuff from Woodware. Fluffy stuff makes great centres for big flowers. It comes in a bottle with a variety of colours, squeeze some out onto your flower centre and heat it with a heat tool till it doubles in size, allow it to set though it won't go really hard it does remain 'puffed' up providing the cat doesn't walk on it!!