Drop flowers are a great way to add flowers quickly. Pipe drop flowers in buttercream icing directly on your cake, or make them in advance using royal icing and place your flowers anywhere. Flowers will be sharper in definition when piped in royal. The star drop flower is the easiest to make because the tip does all the work for you.
Fit the decorating bag with tip 2D and fill 1/2 full with medium consistency icing. Hold the decorating bag at 90° (straight up). The tip should be lightly touching surface.
Squeeze, letting icing build up to make the flower. Stop squeezing, then lift tip away.
Decorate the flower center: Hold the bag straight up with tip 3 almost touching the flower. Squeeze out a dot of icing, keeping your tip buried in it. Stop squeezing, then pull tip up and away. Your dot should have a rounded top.