23.

Widen the bottom pocket up a little.

This is a necessary step to increase the surface area of the bottom to make the boat stable.

Prepare to turn the boat over.

24.

Now, you have completed making traditional paper boat.

You can just stop here. But you could do more if you want.

If you repeat the pocket-fold, then you can make a smaller boat.

Let's go back to the step #18.

Instead of applying the pulling-fold as we have done, we can apply the steps #12-18 again.

Then by applying the pulling-fold, we can make a smaller boat.

We can continue repeating this process to make a even smaller boat if the paper is thin enough.