To get the nude look, you have to have a foundation / powder that precisely matches your skin tone, it absolutely must not be too dark. It is very important that your eyebrows are beautiful and your lips are soft and well groomed.
When you've put your foundation or powder on your face you can use a little blush on your cheekbones, but it must be very discreet. You don't need eye shadow and eyeliner, you only need mascare and not too much of it either. You can apply some foundation to your lips, but don't exaggerate.