I am constantly refining the secret forumla for FLink cards, but at the moment it goes like this:

58% hard work

2% the marvellous creative spur known as 'the electricity bill'

30% pure luck, which I manufacture for the purpose

5% real mind power, as explained in my lecture show

2% medium-strength magic matter-thru-matter fluid, as used in the Linking Rings trick

1% raw inspiration (more details of which can be found here)