Use a brush to apply a product from the bottle to the face. Use a sponge to integrate the placed substance into the skin as smooth as possible. Use a stippling brush to apply foundation and concealer as needed, then blend with a sponge once over the face for a flawless finish.  If you have a preferred way of doing it, go ahead and do it that way. It’s best to do your makeup the way you like, that way you’re not trying something and it doesn’t turn out the way you want. But if you do want to try new techniques, make sure to have some practice before going out.