Ok folow these steps:
Begin with clean hands and a clean face.
Apply moisturizer appropriate to your skin type. Let it set a few minutes, particularly if your skin is oily.
Camouflage under-eye circles, blemishes, etc. with concealer.
Select a foundation that is appropriate to your skin type and the coverage you wish to achieve. The color should match your skin, disappearing when blended well.
Shake the bottle well to mix the formula. Or, simply open a stick or compact version.
Place a small amount of foundation on the back of one hand. Dip your makeup sponge or your middle finger into it.
Apply to the center of your face: cheeks, forehead, chin.
Blend out to your hair and jawline until the foundation vanishes. Pay special attention to blending around the nose, mouth and jawline.
Set the foundation with loose powder immediately following application.