First, trim off about an inch from either side, leaving a chunk in the in the middle that you will just throw away.
Now start pushing those buds into your Styrofoam ball.
Then dip this ball with buds in the food coloring as shown in the illustrator.
These take about 24 hours to dry. Make sure you rotate them a few times during drying time. When they are all dry, trim off the top of an artificial flower and use that stem for your q-tip ball.
And you are done! You can try this with different food colors.