The Boat Base
The boat base is a less common, but still important, origami base. It is rather simple, and can be used to fold a variety of origami models. It is also used to help make the pinwheel base.
Step 1: Start with your piece of paper color side down
Step 2: Crease the paper by valley folding the paper in half horizontally and vertically
Step 3: Crease the diagonals
Step 4: Valley fold the right and left edges to the center
Step 5: Valley fold the top and bottom edges to the center
Step 6: Partially unfold the top flap
Step 7: Valley fold the point at my index finger to the point at my thumb...
... like this:
Step 8: Do the same on the other side and squash fold the flap flat
It should look like this:
Step 9: Rotate the model 180 degrees
Step 10: Repeat steps 6-9 on the new top part to complete your boat base!