Fold it again as shown in the figure, and the two corners are parallelograms. Turn to the back and fold the first triangle.
Fold it down again. Then start to roll. After one lap, the ribbon is folded to the right into a triangle and then folded upward.
Apply hot melt adhesive when rolling. After rolling, subtract the pink ribbon, then apply hot melt adhesive and stick the yellow ribbon.
Continue to fold down, then fold up and roll out a yellow petal. Cut the ribbon and stick a green ribbon.
Do the same thing, roll a green petal. After the green is rolled, cut the ribbon and stick the pink ribbon to continue rolling. After winding, repeat the above steps. After winding yellow and green, cut the ribbon and stick a pink ribbon to continue winding. After scrolling, repeat the above steps, first yellow, green, then pink, and so on.