Step 1: Materials
This wallet won't take long and you only need a bit of things:
Step 2: Folding
Here, you just need to fold the paper(hamburger style). Then, unfold and fold vertically. Then, get both sides and fold it into the crease and unfold.
Step 3: Marking
Take your pencil and make a little line where the creases are. Then, make a diamond in the third row. Finally, cut the all lines and the diamond.
Step 4: Folding2
Follow the pictures....
Step 5: Final Step
Now, tuck all the remaining strips in and your done! (Optional) cover the whole wallet in tape to make it a bit water proof and durable.