Anyway, I will type out the "How-To" description in the magazine for all of you:
Note: True daisies are in season, but they're quite fragile. We used daisy chrysanthemums, which are found year-round at most florists (and even supermarkets) and hold up better out of water.
1. Pinch flower stems to about 4 inches. Make a small slit in the bottom half of each stem with your nails.
2. Thread 1 stem through the slit in another. Continue, adding flowers to reach desired length. To finish, make a second slit in the stem of the first flower, and slip the last flower through it.
Information taken from Martha Stewart Living June 2010 issue, page 58. Number 199.