How to make a traditional cowboy origami hat

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19th picture of traditional cowboy origami hat

19.

Pinch the regions encircle by dotted circles according to the step #18.

Prepare to pinch the upper regions encircle by dotted circles.

20th picture of traditional cowboy origami hat

20.

Pinch the upper regions encircle by dotted circles according to the step #19.

Prepare to apply a horizontal valley-fold.