These are wonderful and decorative ideas for tissue paper rolls - not to mention easy, and I can't wait to get started on these. I can see a few of these flowers sitting prettily on my office desk.
For tutorials on how to make these flowers, you can visit:
http://impressyourkids.org/earth-day-recycled-art-paper-tube-flowers/ for the daisy
http://designbynight.blogspot.com/2010/08/paper-towel-roll-flowerstuturial.html for the camellia
So what are you waiting for? Get those art materials out and start decorating!