For these flower all I did was add different size and color of tulle. On the bottom flower I add a retro flower that I had punched out of a brown paper sack lunch bag and then embossed it with several layers of clear embossing powder. It gives it a translucent appearance.
You will then do the same steps with the tulle. The only thing with gathering the tulle is you will not gather it as tightly as you did the material. The tulle will get lost in the center of the flower. So just gather is very loosely and refer to the photo for a reference.
You will then layer your tulle on top of the material flower and you can embellish it with anything you like in the center. I used a vintage ear ring I got at a local thrift store and just removed the backing. and used my hot glue gun and glue it all together. Here again is the finished flower.