There are dozens of tutorials for these on the internet and even a couple on YouTube.com. The only problem was finding a tidy way to secure the top. So I tried and tried and tried and FINALLY got it.
I figured out that by making spirals on both ends of the length of straight wire FIRST (do one, slip on the spring, then the other) works best. Next position one spiral in one direction and the other spiral in the opposite direction as you complete the teardrop. Secure them with a jump ring. And ... VOILA It works! Now you can wrap the string neatly onto the spring. It's tidy AND secure.