That's how we used to do it with the Number 1 boots, although I
understand they've got the shiny vinyl type these days.
In any case, at the end of stage 2, let the Kiwi dry first.
Applying a number of thin layers over each other and letting each
layer dry before applying the next works better than using a big
swag of the stuff.
Also, if you run the flame over the Kiwi just long enough to melt
it, it won't damage the leather. Also, keeping the flame on one
spot too long makes the melted Kiwi run in streaks, and you get a
lot of clumping. Zippo lighters burn at a lower temperature than
the butane sort and work better.
As for the shining part, you get even better results with cotton
swabs (no Kiwi) under a slowly running tap.