the same place you'd apply bronzer - where the sun naturally hits your face. cheekbones, the bridge of your nose, and lightly on your hair line and chin. Go easy with it though because it is pretty sparkly!
I'm an NW20/NC20,... I have to use it very lightly,.. and I use my 187 to apply it,.. Its definitely a beautiful bronzer. I don't normally need blush when I use it either.
I'm partial to the 187 brush because it sweeps the color on so lightly and evenly. Just do a few swirls on top of the browbone and it's instant contouring.