Here is the link to the instructions - http://ohhappyday.com/2011/05/diy-pop-up-cards/
This was a really nice project that me and my partner did it together (he did the cutting, I did the sticking) we found it really enjoyable and the overall result looks brilliant. I’m going to give it a 5 star rating just because of how easy, fun and timeless it was. The only thing I noticed is that the written instructions lack a little depth; however the step-by-step pictures make up for this. Another plus is that the design is really versatile and below you can see how we changed our card.
Picture above is the front of the card