You'll need:

Spray the entire plunger with gold paint.  Allow to dry.  Spray on a second coat.

Apply one or two coats of whitewash paint with a sponge brush or paintbrush to soften the harsh terracotta color of the clay pot. 

Fill the clay pot with Styrofoam™, making sure it is tightly packed so the wooden handle of the plunger, when inserted, will stand vertically and be stable.  (The weight of the clay pot is sufficient to stabilize the topiary so no sand or pebbles are needed in the bottom of the pot.) 

Insert the handle of the plunger in the center of the Styrofoam™ in the clay pot, pushing it as far down into the foam as possible.

Glue the round Styrofoam™ ball into the bottom of the rubber bowl atop the plunger.

Cover the Styrofoam™ in the clay pot and the rubber bowl with sheet moss.

Wind double strings of white pearls diagonally down the entire length of the handle of the plunger, gluing at the top and the bottom. 

Drape more white pearls artistically from the lip of the rubber bowl being sure they hang below the bottom of the bowl.  (I used three semi-circular staggered drapes to go completely around the bowl.)   

Dangle short strings of floral wedding trim from the lip of the rubber bowl and glue in place.  They need to hang below the bottom of the rubber bowl.

Cover the sheet moss in the clay pot with sparkling antique-gold pearls.  (This is optional.)

Poke hydrangeas that have glue on their stems into the foam in the rubber bowl at the top, making sure the flowers keep the rounded appearance of a ball.

Fill in, here and there, among the hydrangeas with baby’s breath and ribbon loops.  Glue in place.

Arrange a few stems of hydrangeas and baby’s breath around the base of the wooden handle in the clay pot.

Stand back and admire!