Yep, literally pound the leaves, or flowers, into the fabric. You tape the plant matter onto the back of the fabric, turn it over and hammer until you have the look you want. It works best with thinner flowers and leaves. Pansies are quite wonderful and maple, birch and similar leaves work well. You have to prepare the fabric as if you were going to dye it naturally, as that is what you are doing. I wrote an article about it once for someplace else.
Oh, and you all really are very nice for the thumbs up and the wishes that I hang around. I may be occasionally scarce, but I'll be around.