I really want to make one of these leaf bird baths. I have several magazine articles saved showing the step by instruction and then I stumbled upon this article at Birds & Blooms: a step-by-step tutorial on how to use a large leaf from your garden as a pattern for a cement birdbath.
Photo from Birds & Bloom
I have made cement orbs for the garden and that was pretty easy. I think I need to try this and report back to you..