Decorate cookies. Prepare four decorating bags as follows: tip 16 with red icing, coupler with light green icing, tip 67 with dark green icing, and tip 4 with white icing.
Using tapered spatula, ice cakes lightly with white icing. Using bag with white icing, pipe four equally spaced bead flowers on each cookie. Prepare light green bag with tip 3; pipe centers of flowers.
Using red icing with tip 16, pipe rosettes between flowers.
Using dark green bag with tip 67, pipe leaves. Switch light green bag to tip 352; pipe leaves.
Add icing decoration to each cookie.