This is one craft I will LEAF to the pros, hehe, ok, bad jokes aside. These carved leaves (leafs?) are incredible! There’s some DIY instructions here, although, step 4 is “carve the leaf”… oh, ok, no problem. The carving of the leaf is simply removing the surface without cutting or removing the veins. I would recommend not drinking too much coffee before attempting.
photograph from Nature’s Art found via Hither and Thither