Check out my post in "The Training wing". At first (having burnt the shoes down), use only Brown polish. As the polish depth increases, use black polish (only kiwi (not Parade gloss!)), to darken the brown colour of the shoes to the required colour and to increase the depth of shine.
Are these "Parade" shoes? May be worth getting them 'double tapped' before burning them down. You will have to take extra care if you burn them down, as the leather is thinner than normal boot leather and will therefore shrink easier.