What is the best way to preserve bird of paradise flowers?

This is only a suggestion that will perhaps get some response from others. I have used Glycerin to preserve plants such as umbrella plant with gree dye added. If you want to save the natural colors, which will not be the excat as when fresh, Do Not add dye. Use the key word Glycerin to search and read more about using this as a way to preserve flowers. One thing you have to do is to start the process when the plant is still looking good. For example if the edges of the flower/plant have already started to dry the glycerin will not restore the dried pieces I have a lovely bird of paradise that I'm going to try this with, Good Luck!