I am doing my own flowers and I wanted to know if there is a good way to get the curl to hold in the ribbon that will be hanging down.

One way is to use ribbon that has a thin wire going down the side (made inside the ribbon, so it doesn't show) which is called French ribbon. The downside is that if the ribbons get crunched anywhere (by setting them down or bunching them together, etc.) they may stay that way. The other suggestion (from a florist) is to use the end of the bolt ribbon for the hanging down part because it is wound tighter to start with, it stays curled more. Use the top or middle of the bolt for the bows. Some craft shops sell ribbon by the yard, so you could find some bolts that are close to the end for the curls.