Hi, nature is full of awesome structures and designs! I've made a pendant by using a photo of an ivy leaf ... The workflow of this Leaf Vein Pendant was very simple and can be done completely with freeware software like gimp.org (... photo editing), inkscape.org (... vectorize) and blender.org (... extrude, modeling).
Nice work! I wonder how this would look in frosted detail with a higher resolution sample from the leaf.