I have good skin, and I can get my flawless face down to 2 steps - a good primer, and a nice powder foundation buffed on with a kabuki brush.
My favorite primer is actually a drugstore buy - L'Oreal Magic Perfecting Base. I find that it mattifies my skin and makes it more "velvety" than Smashbox Photo Finish, which always felt slightly slick to me.
For foundation, using a powder type eliminates a step for me. My favorites are Laura Mercier powder foundation and MAC Studio Fix. I take a good, dense kabuki brush (like Bare Escentuals full coverage kabuki) and buff the product on over my primer.
If you prefer liquid or cream/mousse foundation - which I do in the winter - use a duo-fiber or stippling brush (ELF stipple, MAC 187) and watch some YouTube videos to pick up the stipple technique, which gives a really airbrushed finish. For luminous, flawless skin, I would look for foundations that use words like "luminous" or "sheer." I don't think you need full coverage. Then apply a translucent loose powder (I like Coty Airspun from the drugstore, or Clinique blended loose powder) over the foundation.
I do use blush or bronzer, eyeshadow, and a couple of other products on top of this. But as far as my actual "face" goes, I very rarely use concealers, correctors, highlighters, etc.