Petals are shaped first, then attached to the stamen individually. To cup a petal, pinch it between thumbs and forefingers, thumbs near center, fingers at edges. Gently pull thumbs outward to stretch the crepe paper, opening up ridges; this will cup it inward into a concave shape. To curl a petal, roll it around a pencil. To pleat the base of a petal, pinch sides together; press folds in place.