You may be tempted to cover up every imperfection with foundation. Don't. According to makeup artist Brigitte Reiss-Andersen, a damp sponge is your new best friend (we swear by the BeautyBlender, but any wedge one will do). Quickly wet your sponge under the faucet, squeeze out the water, and put a dab of foundation on the back of your hand. Pick up the foundation you need with the tip and apply it in dabbing motions on your face. Between the sponge absorbing some of the foundation and the water thinning the rest, you will get the optimal sheer coverage. You may need to blend it with your fingers, but the point is that it won't look cakey or opaque.