Using the pin, stitch a small hole in the butterflies and use the darning needle to thread the butterflies onto the string. Make a knot at the end of the drawstring, thread on a butterfly, make another knot after about 7 cm, thread on the next butterfly, and so on.
Start with the dark butterflies and then brighten up as you go, creating a beautiful color gradient. Hang several flower garlands on a branch or stick, creating a curtain.