Put glue on a margin for a paste and get two parts together. Four margins for paste are the same shape all. Please be careful. The margins for paste trick you.
Please check the point that 5 parts are gathered.
It's gotten 5 parts together.
And please confirm whether the folded lines in process 1 are radiation.
Add parts in the same way.
Finished
Staple joint
Sewing joint
Sewing joint
Clip joint