Whether photographs are being taken indoors or out, the most important rule is that foundation must exactly match skin tone, and the face has to match the body. Sometimes that means bringing the foundation lower on the neck or using some bronzing powder on the neck and chest to help eliminate any obvious color difference between the face and the body.
With outdoor photography, what you see is what you get. Outdoor lighting is very unforgiving.
Use little foundation and a very light hand with blush. Everything has to look great to the naked eye, and makeup has to be well blended.
For indoor photography, the amount of makeup you apply depends on lighting. Define the features and determine if the lighting will wash out the skin tone or enhance it. Extremely strong lighting requires a heavier hand and more definition. But there are many variables in determining the style you want, so you have to be open to trying varying degrees of coverage and definition.