Hold one plumeria flower in your hand. Place a circle of five plumerias around the center flower. Hold the flowers in place with your hand.
Expand your plumeria bouquet to a larger bouquet by adding one more circle of flowers around the five you just added. Place the last six plumerias at equal intervals around the bouquet.
Add sprigs of baby's breath around the bouquet, if desired. Place four sprigs of baby's breath around the outside of the bouquet. Insert three or more stems of the tiny white flower into the bouquet itself, if you like.
Complement the flowers with a bit of greenery by placing four fern sprigs around the outside of the bouquet.
Wrap floral tape around the tops of the stems, just under the flowers. Wrap the tape around four or five times to ensure that the flowers are securely gathered.
Fold your length of silk ribbon in half to find the center point. Bring the center point of the ribbon up to the taped area of the stems.
Wrap the bouquet stems with the silk ribbon until 10 to 12 inches of ribbon remains on either end. Tie a bow with the silk ribbon.
Trim the stems evenly at the bottom, removing at least 1/2 inch from the existing stem bottoms to ensure the plumeria can absorb water. Place the plumeria bouquet in a vase of water or give them to someone special.