The Poinsettia also known as Christmas Flower. 
Weather you want to make a small flowers starting at 22 petals to a large at 40 plus petals. 
This PDF file will show you how to make these from Start to finish. Making the centers, wiring the bracts, veining, thinning the edges as well as bring it all together. This flower is usually made using the Poinsettia cutters. this tutorial is specially for those that do not have the cutters and can use the Wilton Leaf cutters. 
If you have the Poinsettia Cutters then I have a PDF that shows you how to make the same flower using the Poinsettia Cutters.