You could also try preserving your own flowers. You can purchase the kits at craft stores and give it a shot. The way that keeps the flowers looking the most natural is via the silica gel, but you could do it the old fashioned way and just hang each flower upside down from a hanger using a twist tie, then making your own arrangemnt/design. If it will be a few days before you can do something with your flowers, you can cut the stem ends, put them in fresh water that you change daily and keep them in the fridge. They should last a few extra days that way.