I have attatched the cotton flowers (so far!) to stems that I also found at the thrift store. The leaves have a velvety feel to them rather than silk and suit the flowers well. They are longer, and the weight of the flowers leaves them to bend slightly and give them really nice movement.
The felted blooms are going to need a stiffer stem because they weigh a bit more, and I need to attach them with a bead.
These have been so much fun to make, and I am enjoying digging through the baskets of threads, yarns and other fibers I have collected (and continue to scrounge around for!)