Preheat oven at 180°
Sieve dry ingredients like flour, baking powder and baking soda
Make a concoction of coffee powder and warm water n keep aside
Mix sugar n butter with blender
Add dry ingredients in small batches n blend together
Add milk to make batter of smooth consistency
Add coffee concoction and vanilla essence
Grease the cake mould with butter and flour. Pour the batter in mould and give it a light tap
Keep in oven for 40 minutes at 180°. Insert a toothpick in centre to check if its baked all way through
If toothpick comes clean,take out the cake an let it rest on rack untill it is at room temperature before unmoulding
For icing whip the heavy cream, add icing sugar in batches and vanilla essence
You can add coffee concoction in cream too to give coffee flavour
Whip the cream untill soft peaks are formed
Cut the cake in two equal parts horizontally and stack it one on another with whipped cream in between
Crumb coat all the cake n freeze for 10 minutes
Apply reaming icing on the cake n then stack the kitkat on the sides of the cake
Sprinkle gems on the cake to cover all the area
Enjoy