Unless you've got the 3 volume Wilton Way set, I can't think of another place to send you for explicit directions.
Try this, though: Do you have the instructions for violet leaves? I believe that they're in the second Wilton Course Book, and you can also find them here: http://www.wilton.com/decorating/basic/violet.cfm
You'll need a 1 5/8" lily nail; line with foil, and pipe five of the violet leaves inside the nail. Blend the edges inside the nail together with a damp paintbrush or Q-tip. Add a tip 16 star in the middle and add stamens. Easy, huh?