Michelle and Clint, I've tried a number of times to propagate from leaves. Here's what I found out. If the leaf has a bit of stem on it, then there is a good chance it will root and grow. However, if the leaf doesn't have any stem, then I always lost it. Be sure to not let them dry out. Mist daily and keep out of hot sun. I hope you have better success than I did.
You can start a lot of semps quickly by cutting sections of stems that have leaves, then growing them. It's easy to lose the starts if they dry out too much. You might want to try this technique on a variety that you have plenty.