From Broadway: Mac Studio Sculpt Foundation: Application

For medium coverage:

It takes a very little amount of foundation and a stippling brush to get the desired light coverage that I want. I take a tiny bit of the foundation on a lid and just lightly dab the stippling brush

onto that and dot that all over my face and blend with more of a dabbing motion. Once its blended evenly I take the rest of the foundation on the lid and apply it where I want a little more coverage using a concealer brush.
While buying the product I had told the make-up artist that I didn't want to have to use a concealer. She achieved the coverage of the concealer by using the foundation with a concealer brush in the areas that needed concealing. So far thats been working quite well, but keep in mind that I don't necessarily want heavy coverage.

~ IF you don't like the application of the stippling brush and feel like its too light and want heavier coverage I would suggest using a flat top powder brush. The one elf sells is really dense and soft and it's incredibly cheap .