Here is what we did:
Went out in the woods and got some leaves.
Put them on the printer and made a copy.
Iron onto black fabric.
Trace the reverse of the leaf shapes onto paper backed fusible web.
Iron onto back of fabric and cut out leaves.
Iron onto block for a shadow effect.
There were 7 of us here that did this. Why didn't I think to get out my camera when they were all here????