Make cookies one day in advance. Prepare and roll out cookie dough following recipe directions. Use bunny cutter from set to cut cookies. Bake and cool cookies.
Decorate cookies. Prepare royal icing following recipe directions. Tint portion rose. Reserve some white.
Use tip 3, cut parchment bag and full-strength rose icing to outline cookie. Use thinned rose icing in cut parchment bag to fill in. Use tip 3, cut parchment bag and thinned white icing to immediately add polka dots. Let set 24 hours.