hi to all…..
Initially i felt its mirror etching but the more i did i felt its mirror engraving not etching. I am happy with the end result.
a carving or art knife,
some steel wool.
Trace the picture on the back part of the mirror.
Press the tip of the knife and go over all the edges so that all the pencil markings are replaced by knife etches. With the blade of the knife remove the grey-coating in between the outlines. For eg: for the shoe- have removed all the grey-coating but have left the grey-coating where the strap is (when you turn the mirror- right side up, the strap area will have the mirror but the other area will have plain glass).
Use brasso and steel wool and gently clean the area where the grey coating was. When the full picture is etched this way, place a gloss/matt cardboard at the back.
I have done the background by affixing a glossy-grey cardboard and giving it that shadow effect, but you could be more innovative and could also paint it with shiny glass paints so that it gets a more rich look.