Ready-to-use fondant is just as easy to cut and shape as Play-Doh. A hydrangea gumpaste cutter set (petalcrafts.com) adds realistic details. Find fondant and color dust at crafts stores or wilton.com.
Dust work surface with cornstarch. Thinly roll fondant; stamp with petal veiner included in kit.
Cut blossoms with petal cutter. Press petal edges between fingertips; shape and let harden on candy gummy rings until firm enough to lift.
Accent petals with dark blue color dust. Mold anthers; let harden, and brush with yellow dust. Dot petal centers with corn syrup; add anthers.