Mariela: I have medium and medium beige. The medium beige is definately a yellow undertone. The medium isn't quite pink, but it definately not as yellow. I also have warmth which would probably work for anyone. It is reddish and used to add color to your face.
I also agree that just a little goes pretty far. I learned this the hard way! Usually I put on some with the little brush they gave to cover under the eyes and any blemishes and then start blending with the kabuki brush. If I still need more, I add a little with the regular brush and again blend. If I put on too much I use a face cloth to wipe off some of it and blend again. But over all, think sparingly.
I also agree that just a little goes pretty far. I learned this the hard way! Usually I put on some with the little brush they gave to cover under the eyes and any blemishes and then start blending with the kabuki brush. If I still need more, I add a little with the regular brush and again blend. If I put on too much I use a face cloth to wipe off some of it and blend again. But over all, think sparingly.