Pick a concealer that matches the color of your foundation. With a concealer brush, apply a thin layer under the eye, from the inner edge to outer corner. Apply lightly on blemishes, too; blend with a sponge. Here: Prescriptives Camouflage Cream in Y/O Medium.
Choose a shade of foundation that perfectly matches your skin tone. Apply all over face with a foundation brush or fingertips, then blend with a sponge from hairline to an inch or two under your jawline. Here: Prescriptives Flawless Skin Total Protection Makeup in Cream.
Apply a light dusting of loose translucent powder with a puff or brush to set foundation so that it lasts all day. Use a big, flat brush to remove any excess. Here: Prescriptives All Skins Powder in Level 2.