1, 2, 3, 4, … Folding side flaps across doesn’t change the overall shape. Only unfold the immediate step.
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.
Take note of the number of lines each crane is made of to extract origami instructions to make a certain type of person.