about my tandur

sir this is my new design of tandur .i did survey of diferent tandurs n i get that there should be some whole in the coal container so i made some whole at the base of lower container n base of upper container is made up of steel so that the container warm up early . total height of the tandur is 40 cm n ht of upper container is 22 cm nht of lower is 15 cm 3 cm is leg"s ht .ther is a plate at lower for dust n ash bcoz there is whole for air passing . n in this i give a cap also . aluminium foil will be there .