Printer(duh) + ink
Glue or tape (Glue works best for me)
Step 1. Print out the papercraft
Step 2. Cut out the image. DO NOT CUT OFF THE BLACK TABS.
Step 3. Fold the papercraft. It should be obvious.
Step 4. Fold the black tabs I was talking about earlier in the direction they are facing.
Step 5. Glue/tape it together with the tabs!
Step 6(optional) Show your friends and family!
If you guys have any blocks to add, I'll add them on there and maybe even give you credit!
Please tell me what you want that is missing.