Add details. For hat band, tint 1 1/2 oz. fondant light violet. Use fondant roller with pink guide rings to roll out fondant 1/16 in. thick. Use fondant ribbon cutter with 1 in. spacer and straight cutting wheel to cut strip, 19 in. long. Wrap strip around base of half ball cake as a hatband and use damp brush to attach.
For pattern on hat, use decorative press set to lightly imprint patterns on top of cake. Use tip 2 and light rose icing to pipe over patterns.
For scrolls, insert violet scrolls into 10 in. round cake behind where rose will sit. Support as needed with small balls of rose fondant. Roll a 1/2 in. ball of rose fondant and place under rose. Use thinned fondant adhesive to attach rose in front of violet scrolls.