First Cut a strip of fabric with which you will assemble the flower, fold it and hold the fold with pins,
Now make cuts without reaching the end, so you will have the petals of the flower.
Once you have the entire strip cut, remove the pins and roll them provisionally holding with pins, after having rolled the entire strip, sew well so that the roll does not fall apart.
Cut the leaves green or other, also in thin felt and paste or paste them to the flower.
Your flower is ready; if you want you can apply a safety pin, sew it or stick it to the surface you want to decorate.