The most important aspect of foundation is that it looks natural. To acheive this, you have to choose your shade in the right light. The illuminated mirrors you find in celebrities' dressing rooms are best. When you apply your foundation, most should be concentrated at the centre of your face and blended outwards towards the edges. Pay extra attention to blending around the hair and jaw line, as well as the eyelids, especially if you are not wearing eyeshadow.