This guide and the pictures are the best way to destroy your ipad, sorry to say so. If you insert the picks as deep as shown, you cut various wires such as the 3G antenna, the camera, the home button - all of them are placed on both narrow sides of the ipad. Further on you risk scratching the LCD surface, which consists of a dark foil that you may scratch off.

So to make it short: Fingers away from this guide!