Roll cookie dough out to 1/4" thick. Cut out shapes using bodysuit from cutter set. Transfer cookies to baking sheet and insert stick into the bottom of each cookie. Bake 10-12 minutes, or until slightly browned. If stick is not firmly held by cookie spread a small amount of melted chocolate on back of cookie to secure stick.
Color small amount of white fondant green, yellow and blue. Roll out each color of fondant to 1/8" thick. Place impression mat on fondant and roll over mat firmly with rolling pin. Peel off impression mat and use coordinating cutter to cut out fondant shape. Use a small amount of buttercream or clear gel to attach fondant to cookie. Repeat for all colors. Use orange and yellow fondant to make little ducks if desired.
Finish by putting in desired vase and filling with shredded paper. Use styrofoam, candy clay or playdough in base of vase to hold cookie sticks in place.