Take a square piece of paper
Fold it in half diagonally
Fold it in half diagonally again the other way
Unfold the paper
Fold the paper in half horizontally
Fold the paper in half vertically
Push the sides inward to form a triangle base
Fold the top layer corners upward to make the wings
Fold the bottom point upward slightly to shape the body
Fold the wing edges to make them look neat
Open the wings gently
Shape the butterfly as needed