Arabesque | Sample Diagrams | origamio.com

13
14
Fold three places of the remainder in the same way.
15
Turn it over

16
17
Fold it along the folded lines.
Fold it along lines folded.

18
In process.
a yellow mountain line will change to a valley line.
19
In process
20
There are photos of process 18 - 20.
21