This is the second most requested flower. It's really simple and has two different looks. It works best with stiffer things like felt and lightweight cardboard (I put some of these on my fall wreath), but fabric and other things could be used as well.
To begin, take a piece of felt (or desired material)
and fold in half.
Then cut slits on the folded edge, making sure not to cut all the way down.
Then finish it one of these two ways:
Hand sew a baste stitch, with a knot on the end of the thread, down the side where there are no cuts.
Then gather it and sew the ends together. This creates a flat flower. Add a cute button or some other embellishment to the center.
Roll the strip up and hand stitch the bottom together.
I made a bunch of these and then glued them on my daughter's headband for a fun look.