How to make an origami album (long origami book)

(page 6)

9th picture of origami album (long origami book)

09.

Apply the horizontal valley-fold of the step #8.

Prepare to apply the crease pattern (CP) shown on the left.

10th picture of origami album (long origami book)

10.

Apply the CP of the step #9.

Prepare to apply the center "open sink-fold" of the step #9.

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