The smaller roses on the horses are swirl rosettes and I made them with a Wilton #16 star tip. The larger rose on the horseshoe is a Wilton Rose made with a Wilton #3 round tip and a Wilton #101 petal tip. I made the flowers ahead of time and added them to the cookies later as royal icing transfers.
I decorated the horseshoe with gray royal icing and then airbrushed it with a silver metallic sheen after the icing was dry. I used a small dot of leftover royal icing to glue the rose onto the horseshoe. I transferred the smaller swirl roses onto the horse while the horses manes and tail were still drying. The worked to glue the swirl roses onto the horses.