This is my first Instructables.
Step 1: Things You Need.
Raspberry pi overclock kit (fan, heat sink.)
Google sketch up
Step 2: Google Sketch Up.
Make the design using Google sketch up and export it out as a .dae file.
Step 3: Pepakura.
Open pepakura designer 3 and unfold it. Make for sure your sizes are right. Then print it.
Step 4: Cutting.
After you printed it you are going to need to cut it out with an X-Acto knife and glue it together.
Step 5: Raspberry Pi.
After you've designed it, printed it, cut and glued it it's time to put it in the raspberry pi over the heatsinks. I had to make some small adjustments to mine and I also glued the fan to the top of it.