листья Skeletonization of leaves - the process simple, but requires patience and accuracy. All you need is: leaves (better to collect the autumn, then they are more dense), baking soda and food coloring.
These are similar to how my Grandma Deakin's Memorial Day Flowers are made, then dipped in Wax to make they almost weather-proof. All colors, roses and tulips. How to Make Paper Flowers for a Wedding Bouquet : Decorating : Home & Garden Television