Here is a fun flower tutorial. In this style you cut out individual petals. The trick, though, is to use a lighter or flame to curl the petals. So you need to find a fabric that will basically melt instead of burn. I have found that many shiny ribbons will do work very well.
What you will need to start:
A ribbon, a flame, scissors. You can use a candle like in the photo, but I honestly found more control with a lighter. The downside is that the sucker gets hot!
Cut your ribbon into pieces that you can then shape into rough petals. You can vary the size of your petals or leave them all the same…it’s really up to your own design aesthetic.
Once you have all your petals roughly cut, hold them over the flame to melt the edges and get them to curl slightly. You will get a sense of how the fabric behaves after just a few petals. 
Once you have amassed your petals, start constructing your flower. Again, I like to use a base of sturdy fabric to see the flower onto so that I have control of its shape. I prefer to sew, but there is no reason you couldn’t glue the thing if that is your preference–except that its messy and not as sturdy.
Once you have sewn all your petals on, you can go back and fill in spots and manipulate the petals by holding a flame to them.
Here’s another flower done in pink and organza ribbon. I attached a pin and clip to the back to make it wearable. 
(These flower pins and others available for purchase at http://www.etsy.com/shop/LifeImproved)
Life Improved 