Free mermaid card and tutorial!  This mermaid card is easy to make and is a good introduction on how to make 3D cards, using simple but effective techniques.  Once you have had a go of making this version, you can adapt this design for your own purposes.  Have a read of this blog post to find out more about this type of mechanism and the inspiration behind this card.  

To make this card, all you need is a printer, 250gm card or similar, scissors, a cutting mat, a scoring tool and craft knife.