Hint 1
1, 2, 3, 4, … Folding side flaps across doesn’t change the overall shape. Only unfold the immediate step.
Hint 2
Simple and repetitive. Sounds just like folding a thousand paper cranes! The two triangular flaps point downwards, but opening them and pushing them upwards points their tips to the sky.
Hint 3
Take note of the number of lines each crane is made of to extract origami instructions to make a certain type of person.