What do you use first shader or highlighter?

Shader first (the best thing is pressed powder at least three to four shades darker than your overall face powder--for instance, if you wear Cover Girl Ivory, Cover Girl Creamy Natural or Buff Beige would be good) , then highlighter, which is that whitish-pink blusher no one ever wears because they don't know what to do with it. Shader goes under your cheekbones, highlighter on top of them and on your temples, blush (the pinkish-reddish powder most people put under their cheekbones) on the Apples of your cheeks.