It really is up to you: you can either apply concealer, then (liquid) foundation, and then set it all with powder, OR you can apply the concealer and set it with foundation powder. Also, it is typically recommended that your concealer be a shade or two lighter than the foundation you use. If you want an even skin tone, that is what foundation is for, but concealer is typically for blemishes and under eye circles. Ok, I know my answer was all over the place, but I hope it helps a little
