Tip:
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Requirement: square sheet of paper, all kinds are possible
Fold in half diagonally
Don't unfold; fold in half again
Fold the left and right corner to the top
Bring the flaps down to the bottom; don't make a crease!
Just make a pinch mark
Fold to the middle where you made the pinch mark
Reverse fold. Use the crease you've already made
Fold in half
Fold the upper layer to the left
Repeat on the other side, fold to the right
We'll make a crease from here to there
Repeat
Make a crease along this edge
Open up the paper and reverse fold
Fold along this edge
Repeat
Make a crease here
Reverse fold. Use the creases you've already made
Finished! Peace!