When I contour my face I am channeling Naomi Campbell 1993. I want cheekbones that will cut glass. Suck your cheeks in like a fish and use your finger to trace a line from the top of your ears to the corners of your mouth. This is where you can use a contouring powder or cream. I find the Fenty stick to be the easiest way to contour my face. I simply draw a line and blend it out with a brush. Always brush up. If you apply too much use your foundation brush to lighten it up. Also, drag the brush along your temples and around your hairline so that your entire face appears warmer and to add dimension.
For the nose- I start at the inner brow bone right under where my eyebrows begin. I trace one line all the way down to my nostril and another on the other side. Then i diffuse the line with a brush.