I think you could take any of these flower styles and make a necklace, pins, clip, barrette out of it. So, pick the style you like and attach it to whatever "hardware" you prefer.
You don't have to buy new to make this. Look around for stuff you have lying around that could be repurposed. I have a stained hot pink EXPRESS shirt that is just begging for a new life as a flower. I made my first necklace out of a pair of pin striped dress pants I never wore anymore. I have a broken XL pearl bracelet that could become the center of a flower. Christie suggested cutting up an old purse to make the leather one-fabulous idea!
If you do need to buy items, print this post and take it to the craft store as you shopping list.
If you have a glue gun, bring it. If you have fabric scissors, bring those. I'll bring my sewing machine and put in some clear thread so that anyone can use it. I'll also print out the templates